Manipal Entrance Test 2014 Physics Paper

As we know that work done =Utinal−Uintial=

1

2

C(V22−V12)
When potential difference increases from 5V to 10V then W=

1

2

C(102−52) .....(i)
When potential difference increases form 10V to 15V, then W′=

1

2

C(152−102) ......(ii)
On solving Eqs. (i) and (ii) we get
W′=1.67W