The voltage required to produce a power of 180 mW has to be calculated. Concept Introduction: Ohm’s law: Ohm’s law states that the current, I (in ampere) flowing through the circuit is inversely proportional to the resistance, R (in ohm) and directly proportional to the potential difference, E (in volt) across the circuit. I= E R Power: The electric power, P, is the work done per unit time. The unit of power is watt ( W) . Power = work s = E · q s = E · I To Calculate: The voltage required to produce a power of 180 mW

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Chapter 14.1, Problem 4TY

Interpretation Introduction

Interpretation:

The voltage required to produce a power of 180 mW has to be calculated.

Concept Introduction:

Ohm’s law:

Ohm’s law states that the current, I (in ampere) flowing through the circuit is inversely proportional to the resistance, R (in ohm) and directly proportional to the potential difference, E (in volt) across the circuit.

I=ER

Power:

The electric power, P, is the work done per unit time. The unit of power is watt (W) .

Power = works =E·qs =E · I

To Calculate: The voltage required to produce a power of 180 mW

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