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Parallel Circuits - Technical MCQs

Q1:

If R2 opens in the given circuit, the voltage across R1 will ___.

A increase

B decrease

C equal 0 V

D remain unchanged

ANS:D - remain unchanged

In parallel voltage across R1 & R2 have same Vs.

But when R2 is removed then total resistance increases so now total current flow through R1 will be also decrease so according to V= IR voltage remains same