Question

Estimate R1 and R2 for the potential divider in the following figure, so that current I is limited to 1 A when Vo - 20 V.

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Answer 1

A potential divider is a circuit that divides a voltage into two or more parts.

Step-by-step explanation:

In the given circuit, the current I is limited to 1 A when Vo - 20 V. To estimate R1 and R2, we can use the following formula:

I = (V1 - Vo) / R1 = Vo / R2

Solving for R1 and R2, we get:

R1 = (V1 - Vo) / I

R2 = Vo / I

Substituting the values, we get:

R1 = (100 V - 20 V) / 1 A = 80 Ω

R2 = 20 V / 1 A = 20 Ω

Therefore, to limit the current I to 1 A when Vo - 20 V, we need to use resistors R1 and R2 with values of 80 Ω and 20 Ω, respectively 1.