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Series-Parallel Circuits - Technical MCQs

Q1:

How much voltage is dropped across R3 in the given circuit?

A 46 V

B 34 V

C 23 V

D 12 V

ANS:D - 12 V

Parallel resistance along R2, R3, R4 = 24.

Total resistance= R1+(R2||R3||R4) = 92,
Total current= (v/i)= 46/92 =0.5A,
Voltage drop across R3= 24 * 0.5 = 12.