Combining Resistors in Series & Parallel Video Lessons

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Problem: For the circuit shown in the figure, I = 0.50 A and R = 12 Ω. What is the value of the emf ε?

FREE Expert Solution

In this problem, we'll combine resistors in series/parallel and apply ohms law.

Equivalent resistance for resistors in parallel:

1Req=1R1+1R2+...+1Rn

or for 2 resistors:

Req=R1R2R1+R2

Equivalent resistance for resistors in series:

Req=R1+R2+...+Rn

Ohm's law:

V=iR

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Problem Details

For the circuit shown in the figure, I = 0.50 A and R = 12 Ω. What is the value of the emf ε?

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Based on our data, we think this problem is relevant for Professor Liao & Ruyter's class at IU.