Question

A voltage of $75 \mathrm{V}$ is placed across a $15-\Omega$ resistor. What is the current through the resistor?

   A voltage of $75 \mathrm{V}$ is placed across a $15-\Omega$ resistor. What is the current through the resistor?

Physics Principle and Problems

Physics Principle and Problems

Paul W. Zitzewitz,… 1st Edition

Chapter 22, Problem 74

Instant Answer

Solved by Expert Vishal Gupta

06/27/2020

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A voltage of $75 \mathrm{V}$ is placed across a $15-\Omega$ resistor. What is the current through the resistor?

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Key Concepts

Resistance

Resistance is a measure of how much a component opposes the flow of electric current. It is measured in ohms and affects the amount of current that can flow for a given voltage, with higher resistance leading to less current.

Electric Current

Electric current is the flow of electric charge through a conductor and is measured in amperes. It is driven by the applied voltage and is inversely affected by the resistance in the circuit, as described by Ohm's Law.

Ohm's Law

Ohm's Law is a fundamental principle in electrical engineering that states the relationship between voltage, current, and resistance in an electrical circuit (V = IR). It allows for calculating one quantity if the other two are known, as demonstrated by dividing voltage by resistance to find current.

Voltage

Voltage is the electrical potential difference that provides the force which pushes electric charge through a conductor. It is measured in volts and is essential in determining how much energy per unit charge is available in a circuit to overcome resistance.

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