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A charged particle of mass m and charge q is released from rest the position `(x_0,0)` in a uniform electric field `E_0hatj`. The angular momentum of the particle about origin.

A

is zero

B

is constant

C

increses with time

D

decreases with time

Text Solution

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(b) Angular momentum `L=rxxp=rp sin 90^(@)`
`=rp =rmv=` constant
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