Question

Suppose the potential difference between the plates of a capacitor is increased by 20%, the energy stored in the capacitor increases by exactly

Answer 1

Answer:

Energy stored in a capacitor with potential difference V applied across it is  

2

1

​  

CV  

2

=E  

0

​  

.

When potential difference increases by 20%, V  

′

=1.2V

⟹E  

′

=  

2

1

​  

CV  

′2

=  

2

1

​  

C(1.2  

2

V  

2

)

⟹E  

′

=1.2  

2

E  

0

​  

=1.44E  

0

​  

 

Thus the energy stored increases by 44%

Explanation:

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