4. (OpenStax, ch. 9, problem 78) A 20,00 Ohm, 5.00 Watt resistor is placed in series with a power supply. (a) What is the maximum voltage that can be applied to the resistor without harming the resistor? (b) What would be the current through the resistor?

4. (OpenStax, ch. 9, problem 78) A 20,00 Ohm, 5.00 Watt resistor is placed in series with a power supply. (a) What is the maximum voltage that can be applied to the resistor without harming the resistor? (b) What would be the current through the resistor?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 78AP: A 20.00-ohm; 5.00-watt resistor is placed in series with a power supply, (a) What is the maxim tun...

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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

4. (OpenStax, ch. 9, problem 78) A 20,00 Ohm, 5.00 Watt resistor is placed
in series with a power supply. (a) What is the maximum voltage that can be
applied to the resistor without harming the resistor? (b) What would be the
current through the resistor?

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