Ohm's law for electrical circuits like the one shown in the figure states that V=RI. In this equation, V is a constant voltage, I is the current in amperes, and R is the resistance in ohms. Your firm has been asked to supply the resistors for a circuit in which V will be 240 volts and I is to be 10±0.1 amp. In what interval does R have to lie for I to be within 0.1 amp of the value I0=10?

Ohm's law for electrical circuits like the one shown in the figure states that V=RI. In this equation, V is a constant voltage, I is the current in amperes, and R is the resistance in ohms. Your firm has been asked to supply the resistors for a circuit in which V will be 240 volts and I is to be 10±0.1 amp. In what interval does R have to lie for I to be within 0.1 amp of the value I0=10?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter16: Electromagnetic Waves

Section: Chapter Questions

Problem 78P: The prefix “mega” (M) and “kilo” (k), when referring to amounts of computer data, refer to factors...

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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

Ohm's law for electrical circuits like the one shown in the figure states that

V=RI.

In this equation, V is a constant voltage, I is the current in amperes, and R is the resistance in ohms. Your firm has been asked to supply the resistors for a circuit in which V will be

240

volts and I is to be

10±0.1

amp. In what interval does R have to lie for I to be within

0.1

amp of the value

I0=10?

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