Lesson 14 Quiz

What is Ohm's Law formula?

In a series circuit, how is the total resistance calculated?

How is the total resistance in a parallel circuit calculated?

If a resistor of 5 ohms is connected in series with a resistor of 10 ohms, what is the total resistance?

• 5 ohms

• 10 ohms

• 15 ohms

• 50 ohms

A circuit has three resistors in parallel: 4 ohms, 6 ohms, and 12 ohms. What is the total resistance?

• 2 ohms

• 3 ohms

• 4 ohms

• 6 ohms

What is the power dissipated by a 10 ohm resistor with a current of 2 A flowing through it?

• 20 W

• 40 W

• 80 W

• 100 W

In a series circuit with a 12V battery and two resistors of 3 ohms and 6 ohms, what is the current flowing through the circuit?

• 1 A

• 2 A

• 3 A

• 4 A

A parallel circuit has a total current of 6 A and two branches with resistors of 2 ohms and 4 ohms. What is the current through the 2 ohm resistor?

• 2 A

• 3 A

• 4 A

• 6 A

Explain why the total resistance in a parallel circuit is less than the smallest individual resistance.

• Because the voltage is divided among the resistors.

• Because the current is the same through each resistor.

• Because adding more paths allows more current to flow.

• Because the resistors are connected end-to-end.

A circuit consists of a 9V battery and three resistors in series: 2 ohms, 3 ohms, and 4 ohms. Calculate the power used by the 3 ohm resistor.

• 1 W

• 2 W

• 3 W

• 4 W