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Question

An electric dipole consists of a positive and negative charge of 4 μC. Each placed at a distance of 5 mm. The dipole moment for the system is



A

20 x 10-8 C-m

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B

2 x 10-9 C-m

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C

2 x 10-8 C-m

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D

1 x 10-8 C-m

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Solution

The correct option is B

2 x 10-8 C-m


Given:

q = 4 μC = 4 × 10-6

d = 5 mm = 5 ×10-3

The dipole moment = charge x separation distance between them

p = q × d = 4 × 10-6 × 5 ×10-3

p = 2 x 10-8 C-m


Physics

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