Understanding Kirchhoff's Laws Quiz

What does Kirchhoff's Voltage Law (KVL) state?

• The sum of all currents entering a junction must equal zero.

• The sum of all voltages around a closed loop must equal zero.

• The total resistance in a series circuit is equal to the sum of individual resistances.

• The voltage across each component in parallel is different.

Kirchhoff's Current Law (KCL) is based on the principle of conservation of:

• Voltage

• Energy

• Charge

• Power

In a series circuit, if the total voltage supplied is 12V and there are 3 resistors of equal resistance, what is the voltage drop across each resistor?

• 4V

• 12V

• 3V

• 6V

In a parallel circuit with 2 resistors, if the voltage across the circuit is 10V, what is the voltage across each resistor?

• 5V

• 10V

• 20V

• 0V

According to Kirchhoff's Current Law, if three currents entering a junction are 2A, 3A, and 4A, what is the current leaving the junction?

• 1A

• 9A

• 5A

• 0A

How does the total resistance in a series circuit compare to the largest individual resistance?

• It is equal to the largest resistance.

• It is less than the largest resistance.

• It is greater than the largest resistance.

• It is half the largest resistance.

In a parallel circuit, how does the total resistance compare to the smallest individual resistance?

• It is equal to the smallest resistance.

• It is less than the smallest resistance.

• It is greater than the smallest resistance.

• It is the sum of all resistances.

What happens to the total current in a series circuit if the resistance is increased?

• It increases.

• It decreases.

• It remains the same.

• It becomes zero.

In a parallel circuit, if one of the branches is removed, what happens to the total current?

• It increases.

• It decreases.

• It remains the same.

• It becomes zero.

According to Kirchhoff's Voltage Law, in a circuit with a 9V battery and three resistors in series (2Ω, 3Ω, and 4Ω), what is the voltage drop across the 3Ω resistor?

• 3V

• 2V

• 4V

• 9V