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Lesson Worksheet: Energy Conservation in Circuits Physics

In this worksheet, we will practice applying Kirchhoff’s laws to circuits to find the values of currents and potential differences in these circuits.

Q1:

The resistor in the circuit shown is powered by two batteries in parallel that have terminal voltages of 2.5 V each. What is the potential drop across the resistor?

Q2:

The decrease in potential across the resistor in the circuit shown is 15 V. The terminal voltage of one of the batteries powering the circuit is 5.5 V. Find the terminal voltage 𝑉 of the other battery powering the circuit.

Q3:

The current in three wires of the circuit shown are known. The currents 𝐼 and 𝐼 are unknown.

Find 𝐼.

Find 𝐼.

Q4:

Find the decrease in potential across the resistor in the circuit shown. The batteries powering the circuit each have a terminal voltage of 2.5 V.

Q5:

The decrease in potential across the resistor in the circuit shown is 12 V. The terminal voltage of one of the batteries powering the circuit is 5.5 V. Find the terminal voltage 𝑉 of the other battery powering the circuit.

Q6:

The currents in two wires of the circuit shown are known. The currents 𝐼 and 𝐼 are unknown.

Find 𝐼.

Find 𝐼.

Q7:

The current in two wires of the circuit shown are known. The currents 𝐼 and 𝐼 are unknown.

Find 𝐼.

Find 𝐼.

Q8:

The potential drop across one resistor of the circuit shown is known, as is the terminal voltage of the battery powering the circuit. The potential drops 𝑉 and 𝑉 are unknown.

Find 𝑉.

Find 𝑉.

Q9:

Find the potential drop across the resistor in the circuit shown. The batteries powering the circuit each have a terminal voltage of 2.5 V.

Q10:

The potential drop across two resistors of the circuit shown is known, as is the terminal voltage of the battery powering the circuit. The potential drops 𝑉 and 𝑉 are unknown.

Find 𝑉.

Find 𝑉.

This lesson includes 30 additional questions for subscribers.

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