7. Electricity and Magnetism

Circuits — Quiz

Test your understanding of circuits with 5 practice questions.

Practice Questions

Question 1

In a simple DC circuit with a single resistor of resistance $R$ and a voltage source of $V$, what is the correct expression for the current $I$ flowing through the resistor according to Ohm’s law?

Question 2

A series circuit contains three resistors: $R_1 = 2\, \Omega$, $R_2 = 4\, \Omega$, and $R_3 = 6\, \Omega$. If the total voltage supplied is $24\,V$, what is the current flowing through the circuit?

Question 3

In a parallel circuit, two resistors $R_1 = 10\, \Omega$ and $R_2 = 20\, \Omega$ are connected across a $12\,V$ battery. What is the total current supplied by the battery?

Question 4

Which of the following statements is true about the voltage in a series circuit with three resistors?

Question 5

A circuit contains a $12\,V$ battery and three resistors in parallel: $R_1 = 6\,\Omega$, $R_2 = 12\,\Omega$, and $R_3 = 4\,\Omega$. What is the current through the $4\,\Omega$ resistor?