A charged particle of mass 10-3 kg and charge 10-5 C enters a magnetic field of induction 1T. If g= 10 ms-2, for what value of velocity will it pass straight through the field without deflection?
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a
10-3 ms-1
b
103 ms-1
c
10-6ms-1
d
1ms-1
answer is B.
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Detailed Solution
Since the charged particle passes straight without deflection, thereforeBqV = mg or v=mgBq=10-3×101×10-5=103 ms-1