Lesson: Currents in Parallel Circuit Branches

Physics

In this lesson, we will learn how to calculate the currents in different branches of multibranch electric circuits by applying Kirchhoff’s current law.

Worksheet

Q1:

Consider the circuits shown. The resistors’ resistances should be taken to the nearest whole number of ohms (1=1.000×10kΩΩ).

What is the current through 𝑅 in circuit (a)?

What is the current through 𝑅 in circuit (a)?

What is the current through 𝑅 in circuit (a)?

What power is dissipated by circuit (a)?

What is the current through 𝑅 in circuit (b)?

What is the current through 𝑅 in circuit (b)?

What is the current through 𝑅 in circuit (b)?

What power is dissipated by circuit (b)?

Q2:

Consider the circuit shown.

Find the current through 𝑅.

Find the current through 𝑅.

Find the current through 𝑅.

Find the current through 𝑅.

Find the current through 𝑅.

Q3:

In the circuit shown in the accompanying diagram, 𝑅= 5.0 Ω.

Find 𝐼.

Find 𝐼.

Find 𝐼.
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