Essential University Physics
4th Edition
ISBN: 9780134988566
Author: Wolfson, Richard
Publisher: Pearson Education,
expand_more
expand_more
format_list_bulleted
Textbook Question
Chapter 25, Problem 27E
An ammeter with 100-Ω resistance is inserted in the circuit of Fig. 25.27. By what percentage is the measured current in error because of the nonzero meter resistance?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
During an experiment to verify Ohm's law, the voltage supplied and the current through a circuit are measured. [Voltage
is measured in Volt (V) and current in Ampere (A)].
V
www
R
A
Battery
The measured value of the current is I = 2.8 ± 0.1 A and that of the voltage is V = 18 ± 0.4 V. The resistance of the circuit
%3D
%3D
(in Q) can be calculated using the formula, R =V/I,
Calculate the,
a) Resistance (in Q) =
b) Fractional uncertainty in the resistance =
c) Absolute uncertainty (in 2) in the resistance=
A battery is supplying electrical power to a single resistor R. If the total current in the circuit is 0.75 A,
determine the value of R. The battery has EMF 8 v and internal resistance 1 ohm. Express your answer
accurate to four decimal places.
In the given circuit, R1= 6.00 ohms, R2 = 3.00 ohms and R3 = 5.00 ohms. The battery has negligible internal resistance. The current I1 through R1 is 4.00 A. Calculate the EMF of the battery in the circuit in volts.
Chapter 25 Solutions
Essential University Physics
Ch. 25.1 - The figure shows three circuits. Which are...Ch. 25.2 - Rank front highest to lowest the voltages across...Ch. 25.2 - The figure shows all four possible combinations of...Ch. 25.2 - The figure shows a circuit with three identical...Ch. 25.3 - Which circuit(s) cannot be analyzed using series...Ch. 25.4 - All resistors in the figure have the same value...Ch. 25.5 - A capacitor is charged to 12 V and then connected...Ch. 25 - Are household electrical outlets connected in...Ch. 25 - Can the voltage across a batterys terminals differ...Ch. 25 - Can the voltage across a batterys terminals he...
Ch. 25 - When the switch in Fig. 25.25 is open, whats the...Ch. 25 - Two identical resistors in series dissipate equal...Ch. 25 - When a large electric load such as a washing...Ch. 25 - How would you connect a pair of equal resistors...Ch. 25 - You have a battery whose voltage and internal...Ch. 25 - A student whos confused about voltage and current...Ch. 25 - A student whos confused about voltage and current...Ch. 25 - Sketch a circuit diagram for a circuit that...Ch. 25 - Sketch a diagram for a circuit consisting of two...Ch. 25 - Resistors R1 and R2 are in series, and the series...Ch. 25 - Whats the emf of a battery that delivers 27 J of...Ch. 25 - A 1.5-V battery stores 4.5 kJ of energy. How long...Ch. 25 - If you accidentally leave your car headlights...Ch. 25 - A 47-k resistor and a 39-k resistor are in...Ch. 25 - What resistance should you place in parallel with...Ch. 25 - A defective starter motor draws 285 A from a car's...Ch. 25 - Find the internal resistance of the battery in...Ch. 25 - When a 9-V battery is temporarily short-circuited,...Ch. 25 - You have a 1.0-, a 2.0-, and a 3.0- resistor. What...Ch. 25 - Find all three currents in the circuit of Fig....Ch. 25 - Prob. 24ECh. 25 - Find all three currents in the circuit of Fig....Ch. 25 - Prob. 26ECh. 25 - An ammeter with 100- resistance is inserted in the...Ch. 25 - A new mechanic foolishly connects an ammeter with...Ch. 25 - Show that the quantity RC has the units of time...Ch. 25 - If capacitance is in F, what will he the units of...Ch. 25 - Show that a capacitor is charged to approximately...Ch. 25 - An uncharged 10-F capacitor and a 470-k resistor...Ch. 25 - Find an expression for the voltage across the...Ch. 25 - Rework Example 25.3. changing the 4.0- Ω resistor...Ch. 25 - Example 25.3: In the circuit of Example 25.3, take...Ch. 25 - Example 25.3: In Fig. 25.27, take R1 = R2 = 33.0 Ω...Ch. 25 - Example 25.3 In Fig. 25.27, take R1 = 220 Ω, R2 =...Ch. 25 - A professional-grade camera flash gets its energy...Ch. 25 - You're reengieering the camera flash of the...Ch. 25 - Defibrillators restore normal heart rhythm by...Ch. 25 - Example 25.5: You’re designing a defibrillator as...Ch. 25 - In Fig. 25.28, all resistors have the same value,...Ch. 25 - In Fig. 25.28, take all resistors to be 1 k Find...Ch. 25 - Three 1.5-V batteries, with internal resistances...Ch. 25 - Prob. 45PCh. 25 - You company is designing a battery-based backup...Ch. 25 - In the circuit of Fig. 25.30, find (a) the current...Ch. 25 - In Fig. 25.30, how much power is dissipated in the...Ch. 25 - Whats the ammeter reading in Fig. 25.31? FIGURE...Ch. 25 - Find all three currents in the circuit of Fig....Ch. 25 - In Example 25.4. ε2, is taken to be +9 V in the...Ch. 25 - The voltage across the 30-k resistor in Fig. 25.33...Ch. 25 - In Fig. 25.34, what are the meter readings when an...Ch. 25 - Prob. 55PCh. 25 - The voltage across a charging capacitor in an RC...Ch. 25 - Youre designing an external defibrillator that...Ch. 25 - A capacitor is charged until it holds 5.0 J of...Ch. 25 - A capacitor is charged until it holds 5.0 J of...Ch. 25 - In Fig. 25.35 the 2.0-F capacitor is charged to...Ch. 25 - For the circuit of Example 25.6, take = 100 V,...Ch. 25 - In Fig. 25.36, the switch is initially open and...Ch. 25 - Prob. 63PCh. 25 - An ammeter with resistance 1.42 is connected...Ch. 25 - In Fig. 25.37, take 1 = 12.0 V, 2 = 6.00 V, 3 =...Ch. 25 - With all values except 2 as given in the preceding...Ch. 25 - The voltage on a charged capacitor is monitored...Ch. 25 - Find the resistance needed in an RC circuit to...Ch. 25 - Suppose the currents into and out of a circuit...Ch. 25 - Show that a battery delivers the most power when...Ch. 25 - Youre writing the instruction manual for a stereo...Ch. 25 - Show that only half the total energy drawn from a...Ch. 25 - Find the equivalent resistance between A and B for...Ch. 25 - Prob. 74PCh. 25 - Obtain an expression for the rate of increase...Ch. 25 - The circuit in Fig. 25.39 extends forever to the...Ch. 25 - Figure 25.40 on the next page shows the voltage...Ch. 25 - Figure 25.41 shows a portion of a circuit used to...Ch. 25 - An electrochemical impulse traveling along the...Ch. 25 - In Fig. 25.27, take R1 = 47 Ω and R2 = 150 Ω....Ch. 25 - Write the node and loop equations for the circuit...Ch. 25 - Youre about to purchase a battery. Normally,...Ch. 25 - In the circuit of Fig. 25.42 the switch is...Ch. 25 - BIO Stray voltage is a serious problem on dairy...Ch. 25 - BIO Stray voltage is a serious problem on dairy...Ch. 25 - BIO Stray voltage is a serious problem on dairy...Ch. 25 - BIO Stray voltage is a serious problem on dairy...
Additional Science Textbook Solutions
Find more solutions based on key concepts
Two identical bubbles of gas form at the bottom of a lake, then rise to the surface. Because the pressure is mu...
An Introduction to Thermal Physics
The magnitude of the acceleration for both phases, speeding up and slowing down.
College Physics: A Strategic Approach (3rd Edition)
Carefully examine a bulb. Two wires extend from the filament of the bulb into the base. You probably cannot see...
Tutorials in Introductory Physics
Choose the best answer to etch of the following. Explain your reasoning. Which of these stars has the largest r...
The Cosmic Perspective Fundamentals (2nd Edition)
Write each number in decimal form.
23. 6.31 × 10–4
Applied Physics (11th Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- A capacitor of capacitance C = 1 µF is connected in series to a resistor of resistance R = 10 MN and a battery of emf = 3V. The capacitor is initially discharged. How many %3D seconds will it take for the current in the circuit to decrease to 42% of its initial value? Write the answer, rounded off to 2 decimal places, without units.arrow_forwardAn electric device draws 7.10 A at 240 V. If the voltage drops by 10 % , what will be the current, assuming nothing else changes? Next, if the resistance of the device were reduced by 10 %, what current would be drawn at 240 V? Express your answer to two significant figures and include the appropriate units.arrow_forwardOf what material is a resistor made if its resistance is 40.0% greater at 100.0 °C than at 20.0 °C ?arrow_forward
- 50. 2 0.50 A( A 120-volt SOURCE The resistance value of the unknown resistor R is Ohms. Answer in a whole number.arrow_forwardA storage battery has an emf of 6.7 V and internal resistance of 0.50. Compute for the terminal voltage of the battery when it is being charged with 2.0 A.arrow_forwardWhat are the expected readings of the following in the figure below? (R = 7.10 Q, AV = 6.70 V) R Δν 10.0 N V 5.00 N R 4.50 V (a) ideal ammeter (Give your answer in mA.) 246 Apply Kirchhoff's rules to generate a system of equations for the currents in the various branches of the circuit. mA (b) ideal voltmeter (Give your answer in volts.) 2.2 V (c) What If? How would the readings in the ammeter (in mA) and voltmeter (in volts) change if the 4.50 V battery was flipped so that its positive terminal was to the right? ideal ammeter 247 X mA ideal voltmeter 11.2 V Need Help? Read It Master Itarrow_forward
- A potentiometer wire has a length of 4 m and resistance 40. What resistance must series with the be connected in potentionmeter wire and a cell of e.m.f. 2V having internal resistance 202 to get a potential drop of 103 V/cm along the wire ?arrow_forwardGiven the circuit, where the rate at which R1 is dissipating electrical energy is 20.0 W. When the total current flowing in the circuit is 3.50 A. Find Current through both R2 and the 10.0-ohm resistance What is the total electrical consumption?arrow_forwardA hospital electric heater of the resistance 10 Ω draws 18 A current from the service main. At what rate is the thermal energy developed in watts (W)? What is the cost of operating the heater for 24 hours if the cost of one kilowatt per hour in Florida is 11.37cents (11.37¢ / kWh).arrow_forward
- Question 4. (a) If a battery with a 0.100 internal resistance supplies 15.0 W of total power with a 9.00 V terminal voltage, determine the current I and the power delivered to the load resistor. (b) In the electric circuit of Figure 2, the current = 3.0 A and the values of e and Rare unknown. What are the currents I, and I3? 24 V 300 6.00 Figure 2: Electric cireuit diagram for Question 4 barrow_forwardDuring an experiment to verify Ohm's law, the voltage and resistance of a circuit are measured. [Resistance is measured in Ohm (2) and voltage in Volts (V)]. www R A +, + Battery The measured value of the voltage is V = 9.8 ± 0.4 V and that of the resistance is R = 15 ± 0.4 Q. The current through the circuit (in Ampere (A)) can be calculated using the formula, I =V/R. Calculate the, a) Current (in Ampere) = b) Fractional uncertainty in the current = C) Absolute uncertainty (in Ampere) in the surrentarrow_forwardFor problem 29 find the magnitude of the current in resistor 1 if it has a resistance of 18.4 Ohms with E = 12.0 V and R2 = 18.0 Ohms. (Answer in 5 sig. figs)arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
How To Solve Any Resistors In Series and Parallel Combination Circuit Problems in Physics; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=eFlJy0cPbsY;License: Standard YouTube License, CC-BY