7. A current of 2 A flows through a 2 2 resistor when connected across a battery. The same battery supplies a current of 0.5 A when connected across a 9 resistor. The intern resistance of the battery is (a) 1/3 Ω (b) 1/4 Ω (c) 1 taken to earebiren (d) 0.5

7. A current of 2 A flows through a 2 2 resistor when connected across a battery. The same battery supplies a current of 0.5 A when connected across a 9 resistor. The intern resistance of the battery is (a) 1/3 Ω (b) 1/4 Ω (c) 1 taken to earebiren (d) 0.5

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter18: Direct-Current Circuits

Section: Chapter Questions

Problem 50AP: Three 60.0-W, 120-V lightbulbs are connected across a 120-V power source, as shown in Figure P18.50....

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Concept explainers

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.

Question

7. A current of 2 A flows through a 2
resistor when connected
across a battery. The same battery supplies a current of 0.5 A
when connected across a 9 resistor. The inter-
resistance of the battery is
(a) 1/3 Ω
(c) 1 bakoi tolesnobnego(d)
(b)
1/4Ω
0.5 rea
Ω

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