A 12.0-V emf automobile battery has a terminal voltage of 16.0 V when being charged by a current of 10.0 A. (a) What is the battery’s internal resistance? (b) What power is dissipated inside the battery? (c) At what rate (in °C/min) will its temperature increase if its mass is 20.0 kg and it has a specific heat of 0.300kcal/kg·°C, assuming no heat escapes?

Q: A flashlight bulb rated at 2.0 W and 3.0 V is operated by a 9.0-V battery. To light the bulb at its…

A: The current across the bulb can be obtained as P=VbulbII=PVbulb=2.0 W3.0 V=0.67A

Q: Assuming 95.0% efficiency for the conversion of electrical power by the motor, what current must the…

A:

Q: nich of the following is true about a practical battery? If the battery is absorbing power, its…

A: A Practical battery can be defined as the collection of one or more electrochemical cells that…

Q: 15.0 (2 10.0 Q 20.0 Q 40.0 V イ介介分 16.0 Q

A: Given Data : The voltage of the battery is given as V = 40V The above-shown circuit has 2 resistors…

Q: A power transmission line carries 520 A of current at a voltage of 924 kV. If the line has a…

A: I = 520 A R = 48 μΩ/m = 48 x 10-6 Ω/m d = 509 km = 509 x 103 m P = ?

Q: In a 240 V circuit, how many 65 W light bulbs can you connect in parallel without tripping a 10-A…

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Q: In the United States the standard voltage in homes is 120 V. Therefore, a “90 W” American bulb would…

A: Power of bulb = P = 90 W Voltage = V = 120 V Resistance of bulb can be found by following formula:…

Q: A Christmas light is made to flash via the discharge of a capacitor. The effective duration of the…

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Q: An electric circuit has a battery with an EMF of 1.50 V. Its positive terminal is connected to its…

A:

Q: A battery with a 0.100-Ω internal resistance supplies 15.0 W of total power with a 9.00 V terminal…

A:

Q: Consider a galvanometer with an internal resistance of 60 O. If the galvanometer is being used as an…

A:

Q: A 1.00-V potential difference is maintained across a 10.0-Ω resistor for a period of 20.0s. What…

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Q: 27 Two identical resistors M and P'each of resistance 10 2' are connected in series with each other…

A:

Q: ain car battery with a 12.0 V emf has an initial charge of 162 A·h. Assuming that the potential…

A:

Q: Te-Learning Portal Courses - Reports e-Services - Academic Departments - ETC - CIMS - Salim During…

A: a) R = 14/3.1 = 4.52 Ohm  b) fractional uncertainty ∆R/R = (∆V/V+∆i/i)  = (0.5/14) + (0.2/3.1)  =…

Q: Given the circuit shown in Fig. 19–38, use the words "increases," "decreases," or "stays the same"…

A: (a) In the figure, resistor R7 is connected in the series with the circuit or other combinations.…

Q: Why should you not connect an ammeter directly across a voltage source as shown in Figure 21.51?…

A: Ammeter is a device used to measure current. It has a very low resistance.

Q: 1 - chapter28-question20 A certain capacitor, in series with a resistor, is being discharged, q(t) =…

A: Given data: Initial charge is, Q. Time interval is, t=10 ms. Charge at the end of 10 ms is, q(t)=Q2.

Q: (II) In Fig. 19–69 (same as Fig. 19–20a), the total resistance is 15.0 kN, and the battery's emf is…

A: Given: The total resistance of the circuit is R=15 kΩ. The emf of the batter is Vmax=24 V. The time…

Q: A power supply has a fixed output voltage of 12.0 V, but you need Vr = 3.5 V output for an…

A: V = 12 V  R1 = 14.5 ohm  VT = 3.5 V

Q: he following equations describe an electric circuit. -1,(210 0) + 5.80 V – I,(393 n) = 0 1,(393 0) +…

A:

Q: A person notices a mild shock if the current along apath through the thumb and index finger exceeds…

A: Maximum current to avoid the shock = 80 uADry skin resistance = 4×105 ΩWet skin resistance = 2 ×103…

Q: Can a copper wire and an aluminum wire of the samelength have the same resistance? Explain

A: The expression for resistance is, R=ρLA        (I)           L=length of wire,A=area of…

Q: Consider strings of incandescent lights that are used for many ornamental purposes, such as…

A:

Q: A certain car battery with a 12.0 V emf has an initial charge of 120 Ah. Assuming that the…

A: Given:  Potential difference, V = 12 V  i t = 120 Ah  Power, P = 100 W  Let t is the time.

Q: kINDLY ANSWER THIS IMMEDIATELY, THANKYOU FOR HELPING OUT :) A storage battery has an emf of 25 V and…

A: The fall of a potential V across resistance r having current I is given as V=Ir .

Q: Why should you not connect an ammeter directly across a voltage source as shown in Figure 21.51?…

A:

Q: + + - + - + (a) (b) (c) Assume that the batteries and the light bulbs in the circuits are identical.…

A: Let emf of each battery = E Let the resistance of each light bulb = R

Q: - In a discharge tube, the number of protons drifting across any cross-section is 1-0 x 1018 per…

A:

Q: 13- chapter27-question33 When potential difference across a given copper wire increases, drift…

A: When potential difference across a copper wire is increased then the number of electrons flowing…

Q: In a certain stereo system, each speaker has a resistance of 4.00 Ω. The system is rated at 60.0 W…

A:

Q: A three-way lightbulb can produce 50 W, 100 W, or 150 W, at 120 V. Such a bulb contains two…

A: Given: A three-way light bulb can produce 50W, 100W and 150W at 120 V.

Q: Can a tungsten wire and an aluminum wire of the same length have the same resistance? Explain.

A:

Q: A device (such as a light bulb)  experiences a voltage drop of 4.0 V across it while a DC current of…

A: The power dissipated by the device will be the product of the voltage drop across it and the current…

Q: Different lamps might have batteries connected in either of the two arrangements shown in Fig.…

A: (a) here the two bulbs are connected in series, so the voltage to the bulb increases and the…

Q: 19- chapter28-question12 Two capacitors and two resistors are connected as shown. The total initial…

A:

Q: As more resistors are added in series across a constant voltage source, the power supplied by the…

A: Given data: Resistors added in series Voltage source is constant

Q: A close inspection of an electric circuit reveals that a 480 ohm resistor was inadvertently soldered…

A: Given, Resistor soldered = 480 ohm Resistor needed = 350 ohm Without removing anything in the…

Q: A holiday goose is cooked in the kitchen oven for 4.00 h. Assume that the stove draws a current of…

A: time, t = 4 h Current, i = 20 A  Voltage, V = 220 V  Cost $ 0.068 per kWh

Q: The severity of a shock depends on the magnitude of the current through your body. Would you prefer…

A: It would be preferable to be in series with the resistance.

Ohm's law

Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.

Path of Least Resistance

In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.