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Question
Four identical capacitors are connected in series with a 12 V battery as shown in figure. The potentials of points A and B are :
Four identical capacitors are connected in series with a 12 V battery as shown in figure. The potentials of points A and B are :
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Solution
The correct option is D +9 V,−3 V
As four identical capacitance are in series so potential across each capacitor: Vc=124=3 V
Thus, VA−VG=3+3+3=9 V
or VA−0=9 as G is grounded so its potential is zero.
∴VA=9 V
and VG−VB=3
or 0−VB=3
or VB=−3 V
As four identical capacitance are in series so potential across each capacitor: Vc=124=3 V
Thus, VA−VG=3+3+3=9 V
or VA−0=9 as G is grounded so its potential is zero.
∴VA=9 V
and VG−VB=3
or 0−VB=3
or VB=−3 V
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