Question

# A point charge of charge Q moving with angular velocity ω in circle of radius R find →B at centre.

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Solution

## Given angular velocity =ω and radius =RWe know linear velocity of the point charge particle ,V=ωR----(A)Also we know magnetic field →B=μ04πQVRR3Reducing the value of A in the above mentioned equation we get,→B=μ04πQωR2R3→B=μ04πQωR

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