Current Electricity Charging Discharging Of Capacitors Question 159
Question: In the circuit element given here, if the potential at point B, VB = 0, then the potentials of A and D are given as
[AMU (Med.) 2002]
Options:
A) $ V _{A}=-1.5V,V _{D}=+2V $
B) $ V _{A}=+1.5V,V _{D}=+2V $
C) $ V _{A}=+1.5V,V _{D}=+0.5V $
D) $ V _{A}=+1.5V,V _{D}=-0.5V $
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Answer:
Correct Answer: D
Solution:
Potential difference between A and B $ V _{A}-V _{B}=1\times 1.5 $
$ \Rightarrow V _{A}-0=1.5V\Rightarrow V _{A}=1.5V $ Potential difference between B and C $ V _{B}-V _{C}=1\times 2.5=2.5V $
Therefore $ 0-V _{C}=2.5V\Rightarrow V _{C}=-2.5V $ Potential difference between C and D $ V _{C}-V _{D}=-2V $
$ \Rightarrow -2.5-V _{D}=-2\Rightarrow V _{D}=-0.5V. $
BETA
