A battery with an emf of 40 V and internal resistance of 0.3 Q is connected across a load resistor R. If the current in the circuit is 8.6 A, what is the value of R (in Q)? it R Select one: ОА. 3.89 Ов. 5.28 Ос. 3.42 OD. 4.65 O E. 4.35

A battery with an emf of 40 V and internal resistance of 0.3 Q is connected across a load resistor R. If the current in the circuit is 8.6 A, what is the value of R (in Q)? it R Select one: ОА. 3.89 Ов. 5.28 Ос. 3.42 OD. 4.65 O E. 4.35

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 55P: A 20.00-V battery is used to supply current to a 10-k resistor. Assume the voltage drop across any...

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Concept explainers

Resistivity

Resistivity is a characteristic property of the conductor’s material that measures the extent to which the material opposes the flow of current. It is denoted by the Greek letter “rho”. Electrical resistivity, also known as specific resistance, depends on the nature of the material of the conductor and is unaffected by its dimensions.

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A battery with an emf of 40 V and
internal resistance of 0.3 Q is
connected across a load resistor R. If
the current in the circuit is 8.6 A, what
is the value of R (in Q)?
R
Select one:
O A. 3.89
O B. 5.28
Oc. 3.42
OD. 4.65
O E. 4.35

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