Question

(A Level) 101. What is the reading shown on the voltmeter? (The voltmeter has infinite internal resistance). (all capacitor have the same capacitance of 5 F). 10 V 1 H HHH V (a) 2.5 V (c) 7.5 V (b) 5 V (d) 10 V (A Level)​

Answer 1

Answer:

Correct option is

A

12 V

Let us assume voltmeter is ideal:-It means voltmeter has infinite resistance and current will not flow in voltmeter.

R

eq

in upper branch = R

eq

in lower branch. So current will get equally divide into both branches.

V

A

−V

B

=4×1(1)

V

A

−V

D

=16×1(2)

Subtract 2 and 1

V

B

−V

D

=12V

A voltmeter will read 12 V

solution

Explanation:

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