KCET 2023 Physics Solved Paper

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Question : 44 of 60

Marks: +1, -0

In the situation shown in the diagram, magnitude of q<<|Q| and r≫a. The net force on the free charge −q and net torque on it about O at the instant shown are respectively [p=2‌aQ is the dipole moment]

−‌
1
4πε0
‌
pq
r2
^
k
,−‌
1
4πε0
‌
pq
r3
^
i
‌
1
4πε0
‌
pq
r3
^
i
,+‌
1
4πε0
‌
pq
r2
^
k
‌
1
4πε0
‌
pq
r3
^
i
,−‌
1
4πε0
‌
pq
r2
^
k
‌
1
4πε0
‌
pq
r2
^
k
,‌
1
4πε0
‌
pq
r3
^
i

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