SSC JE Electrical Engineering 2014 Set 1 Paper

Question : 116 of 200

Marks: +1, -0

For the linear circuit shown in figure,
when R = ∞, V = 20 V;
when R = 0, I = 4 A;
When R = 5 Ω, the current I is I

Solution:

Req = 20/9 = 5 Ω

when

R = 5W,

I = 20/ {\Req + R} = 20/ {5+ 5 } =2A

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