4. Physical Principles

Electricity — Quiz

Test your understanding of electricity with 5 practice questions.

Practice Questions

Question 1

A parallel circuit has three resistors: $R_1 = 10 \ \Omega$, $R_2 = 20 \ \Omega$, and $R_3 = 30 \ \Omega$. If a voltage of $60 \ \text{V}$ is applied across the circuit, what is the total current drawn from the source?

Question 2

A series circuit consists of a $12 \ \text{V}$ battery and two resistors, $R_1 = 5 \ \Omega$ and $R_2 = 7 \ \Omega$. What is the voltage drop across $R_2$?

Question 3

Which of the following scenarios would result in the highest power dissipation in a resistor?

Question 4

A circuit contains a $12 \ \text{V}$ battery and a single resistor. If the current flowing through the resistor is $0.5 \ \text{A}$, what is the power dissipated by the resistor?

Question 5

Two resistors, $R_1$ and $R_2$, are connected in parallel. If $R_1 = 12 \ \Omega$ and the total equivalent resistance of the parallel combination is $4 \ \Omega$, what is the value of $R_2$?