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Lesson Worksheet: Analyzing Combination Circuits Physics • 9th Grade

In this worksheet, we will practice determining the currents through and voltages across parts of circuits that contain resistors both in series and parallel.

Q1:

Find the total current in the circuit shown. Give your answer to one decimal place.

Q2:

What is the total current through the circuit shown? Give your answer to two decimal places.

Q3:

What is the current 𝐼 in the circuit shown? Give your answer to two decimal places.

Q4:

In the circuit shown, the current takes multiple paths from the positive battery terminal to the negative battery terminal.

Find the total resistance of the circuit.

What is the ratio of the potential drop across the 14 Ω resistor and the 18 Ω resistor? Give your answer to two decimal places.

Q5:

The circuits (a) and (b) appear very similar but are slightly different from each other. What is the difference in the total current between the circuit shown in diagram (a) and the circuit shown in diagram (b)? Give your answer to one decimal place.

Q6:

The circuit shown contains both series and parallel combinations of resistors.

What is the total current in the circuit shown? Give your answer to one decimal place.

What is the total power dissipated by the circuit? "Give your answer to one decimal place.

Q7:

What is the ratio of the total current produced by the circuit shown in diagram (a) to the total current produced by the circuit shown in diagram (b)? Give your answer to two decimal places.

Q8:

What is the ratio of the total current produced by the circuit shown in diagram (a) to the total current produced by the circuit shown in diagram (b)? Give your answer to two decimal places.

Q9:

In the circuit shown, 𝑅=2𝑅 and 𝑅=3𝑅. The total current through the circuit is 0.36 A. What is the resistance 𝑅?

Q10:

The diagram shows a circuit containing two cells.

What is the current at the negative terminal of the 15-volt battery? Give your answer to one decimal place.

What is the current at the negative terminal of the 12-volt battery? Give your answer to one decimal place.

What is the current through the 3.8 Ω resistor? Give your answer to one decimal place.

This lesson includes 58 additional questions for subscribers.

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