What is the reading of the Voltmeter shown in the figure?
a. 8V
b. 10V
c. 16V
d. 20V
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Ответ:
Correct option is A)
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
Ответ: