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Question
Physics
Figure shows a balanced Wheatstone net. Now, it is disturbed by changing P to 11 Ω. Which of the following steps will not bring the bridge to balance again?
Q. Figure shows a balanced Wheatstone net. Now, it is disturbed by changing
P
to
11
Ω
. Which of the following steps will not bring the bridge to balance again?
161
154
Current Electricity
Report Error
A
increasing
R
by
2
Ω
B
increasing
S
by
20
Ω
C
increasing
Q
by
10
Ω
D
making product
RQ
=
2200
(
Ω
)
2
Solution:
P
/
Q
=
R
/
S
. If
P
is increased, then either
R
or
Q
should be increased or
S
should be decreased.