6. Electricity and Magnetism

Dc Circuits — Quiz

Test your understanding of dc circuits with 5 practice questions.

Practice Questions

Question 1

A series circuit has three resistors: $R_1 = 5 \ \Omega$, $R_2 = 10 \ \Omega$, and $R_3 = 15 \ \Omega$. If the voltage source is $60 \ \text{V}$, what is the total current flowing through the circuit?

Question 2

A parallel circuit has two resistors: $R_1 = 8 \ \Omega$ and $R_2 = 12 \ \Omega$. If the total current supplied by the power source is $5 \ \text{A}$, what is the voltage across the parallel combination?

Question 3

A series circuit contains a $10 \ \text{V}$ battery and two resistors, $R_1 = 3 \ \Omega$ and $R_2 = 7 \ \Omega$. What is the power dissipated by resistor $R_1$?

Question 4

A parallel circuit has a $12 \ \text{V}$ battery and two resistors, $R_1 = 4 \ \Omega$ and $R_2 = 6 \ \Omega$. What is the current flowing through resistor $R_1$?

Question 5

Consider a circuit with a $20 \ \text{V}$ power supply. A $5 \ \Omega$ resistor is connected in series with a parallel combination of two resistors, $R_A = 10 \ \Omega$ and $R_B = 15 \ \Omega$. What is the total equivalent resistance of the circuit?