EBK PHYSICS FOR SCIENTISTS & ENGINEERS
5th Edition
ISBN: 9780134296074
Author: GIANCOLI
Publisher: VST
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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)].
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on
Battery
The measured value of the current is I = 3.1 ± 0.2 A and that of the voltage is V = 14 0.5 V. The resistance of
the circuit (in N) can be calculated using the formula, R = V/I,
Calculate the,
a) Resistance (in 2) =
b) Fractional uncertainty in the resistance =
c) Absolute uncertainty (in 2) in the resistance=
(a) A 60-W incandescent bulb operates at 120 V. How many electrons and coulombs flow
through the bulb in one hour? +
) An electron beam consist of 1016 electrons passing through a given cross section n one minute. (a) Determine the current in amperes. (b) If the potential difference between the tip of the electron gun and the screen is 5000 V, determine the resistance of the path taken by the electron beam.
Chapter 25 Solutions
EBK PHYSICS FOR SCIENTISTS & ENGINEERS
Ch. 25.2 - If 1 million electrons per second pass a point in...Ch. 25.2 - Prob. 1BECh. 25.3 - Return to the Chapter-Opening Question, page 651,...Ch. 25.4 - Prob. 1DECh. 25.4 - Prob. 1EECh. 25.4 - Prob. 1FECh. 25.4 - How many 60-W 120-V lightbulbs can operate on a...Ch. 25.6 - Each channel of a stereo receiver is capable of an...Ch. 25 - What quantity is measured by a battery rating...Ch. 25 - When an electric cell is connected to a circuit,...
Ch. 25 - When a flashlight is operated, what is being used...Ch. 25 - One terminal of a car battery is said to be...Ch. 25 - When you turn on a water faucet, the water usually...Ch. 25 - Can a copper wire and an aluminum wire of the same...Ch. 25 - The equation P = V2/R indicates that the power...Ch. 25 - What happens when a lightbulb burns out?Ch. 25 - If the resistance of a small immersion heater (to...Ch. 25 - Prob. 10QCh. 25 - Explain why lightbulbs almost always burn out just...Ch. 25 - Which draws more current, a 100-W lightbulb or a...Ch. 25 - Electric power is transferred over large distances...Ch. 25 - A 15-A fuse blows repeatedly. Why is it dangerous...Ch. 25 - When electric lights are operated on low-frequency...Ch. 25 - Driven by ac power, the same electrons pass back...Ch. 25 - The heating element in a toaster is made of...Ch. 25 - Is current used up in a resistor? Explain.Ch. 25 - Compare the drift velocities and electric currents...Ch. 25 - A voltage V is connected across a wire of length l...Ch. 25 - Why is it more dangerous to turn on an electric...Ch. 25 - Prob. 1PCh. 25 - Prob. 2PCh. 25 - Prob. 3PCh. 25 - Prob. 4PCh. 25 - Prob. 5PCh. 25 - Prob. 6PCh. 25 - Prob. 7PCh. 25 - Prob. 8PCh. 25 - Prob. 9PCh. 25 - Prob. 10PCh. 25 - Prob. 11PCh. 25 - Prob. 12PCh. 25 - Prob. 13PCh. 25 - Prob. 14PCh. 25 - Prob. 15PCh. 25 - (II) A rectangular solid made of carbon has sides...Ch. 25 - (III) A hollow cylindrical resistor with inner...Ch. 25 - Prob. 63GP
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- 1. (a) A certain conductor has a resistance of 10 ohms. It is placed between the poles of a cell whose potential is 5 volts. What current will pass through the conductor if the voltage remains constant at the value given? (b) How many coulombs of electricity will pass through the conductor if this current is maintained for 20 minutes? c) what will be the energy expended during this time interval?arrow_forward(1) A silver wire 1.00 mm in diameter transfers a charge of 65.0 C in 1 hr. 15.0 min. Silver contains 5.0 x 1028 electrons per cubic meter. What is the current in the wire? What is the magnitude of the drift velocity of the electrons in the wire?arrow_forwardHow much charge passes a given point in a conductor when a current of 10 A flows for 25 seconds ?arrow_forward
- (i) A battery has an emf of 3.0 V and an internal resistance of 0.0200 Ω. What is the terminal voltage when the current drawn from the battery is 2.0 A? The terminal voltage is = (ii) If a current of 75 mA exists in a metal wire, how many electrons flow past a given cross section of the wire in 3 min? Number of electrons flow past a given cross section of the wire =arrow_forwardA conductor has a resistance of R. it was cut into twelve even pieces. Six of them are connected in series, six are connected in parallel. Then they are again connected in series. Find the total resistance. (10) 1arrow_forwardA capacitor has an intial charge 8.3 Coul. If the current flows through it is given by the equation i = 2t + 3 Amp, find the charge when t =1 sec.arrow_forward
- Calculate how many electrons pass per second through a conductive wire connected to a 100W lamp at 127 V. Repeat calculations for a 100 W lamp at 220 V.arrow_forward-4 If the magnitude of the drift velocity of free electrons in a copper wire is 8.56 x 10* m/s, what is the electric field in the conductor? V/marrow_forwardHow much current is flowing if 24 C of charge have passed for 2 minutes?arrow_forward
- The electron drift arises due to the force experienced by electrons in the electric field inside the conductor. But force should cause acceleration. Why then do the electrons acquire a steady average drift speed?arrow_forward(II) Calculate the ratio of the resistance of 10.0 m of aluminum wire 2.2 mm in diameter, to 24.0 m of copper wire 1.8 mm in diameter.arrow_forwardIn a certain region of space, the current density is ] = C(x³î + y³ĵ + z³k), being the value of the constant "C" equal to 10-3, the coordinates x, y and z are in meters. I) II) III) Find the units of the constant C. How fast does the charge density "p" (in C/m³.s) change at the point P with coordinates equal to (2, -1, 4) m? Find the rate of change of the electric charge contained in a sphere of radius R=20 cm with center at the origin 0, for a given instant of time.arrow_forward
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