NCCER 26104

What is the total resistance of three resistors in parallel with values of 2 ohms, 4 ohms, and 4 ohms?

• 1Ω

• 2Ω

• 4Ω

• 10Ω

The current flowing through a hair dryer that uses 1,200 watts of power with an applied voltage of 120V is _____.

• 5A

• 10A

• 15A

• 20A

The total resistance of four equal resistors in parallel, each with a value of 10 ohms, is _____.

• 0.25Ω

• 2.5Ω

• 10Ω

• 40Ω

What is the total resistance of three resistors in parallel with values of 4 ohms, 8 ohms, and 8 ohms?

• 2Ω

• 4Ω

• 8Ω

• 20Ω

If a circuit has a voltage of 240V across two parallel branches with current loads of 20A and 25A, the total current is _____.

• 10A

• 20A

• 25A

• 45A

A circuit diagram shows that the circuit divides into separate branches and there are also series loads. This is a _____.

• series circuit

• parallel circuit

• series-parallel circuit

• series-series circuit

The total resistance of the circuit shown in the figure provided is _____.

• 15.32Ω

• 24.17Ω

• 70.41Ω

• 120.12Ω

There are four resistors in a circuit with an applied voltage of 120V. The voltage drop across three resistors is 10V each. What is the voltage drop across the fourth resistor?

• 10V

• 30V

• 90V

• 120V

According to Kirchhoff’s current law, the current in a parallel circuit is equal to _____.

• the applied voltage

• zero

• the total voltage drop

• the sum of the currents in each branch

The total voltage in a circuit with voltage drops of 30V, 40V, and 50V is _____.

• 20V

• 60V

• 120V

• 180V