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Charges Q1 and Q2 lie inside and outside...

Charges `Q_1 and Q_2` lie inside and outside, respectively, of a closed surface S. Let E be the field at any point on S and `phi` be the flux of E over S.

A

If `Q_(1)` changes, both `E` and `phi` will change.

B

If `Q_(2)` changes `E` will change but `phi` will not change

C

If `Q_(1)=0` and `Q_(2)!=0` then `E!=0` but `phi=0`

D

If `Q_(1)!=0` and `Q_(2)=0` then `E=0` but `phi!=0`

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The correct Answer is:
D
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