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Byju's Answer
Standard VII
Physics
Electric Current and Electric Cell
A cell of e.m...
Question
A cell of e.m.f. 2V and negligible internal resistance is connected to resistors
R
1
and
R
2
as shown in the figure. The resistance of the voltmeter,
R
1
and
R
2
are 80
Ω
, 40
Ω
and 80
Ω
respectively. The reading of the voltmeter is:-
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Solution
Voltmeter resistance
R
v
=
80
Ω
Reading of voltmeter
V
=
R
v
R
v
+
R
1
+
R
2
E
Or
V
=
80
80
+
40
+
80
×
2
=
0.8
Volts
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0
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