SSC JE Electrical Engineering 2017 Set 1 Paper

Question : 135 of 200

Marks: +1, -0

In the below network effective resistanceexisting across the voltage source is ____?

Solution:

Current through the 4Ω Resistor
=

I-I/4={3I}/4

Voltage drop across 4Ω Resistor
=

{3I}/4×4=3I

R_(\effective) = V/ I ={3I}/ I = 3Ω

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