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An electron is projected into a magnetic...

An electron is projected into a magnetic field of B= `5×10^-3` T and rotates in a circle of radius of R=3 mm. Find the work done by the force due to magnetic field.

A

0 J

B

15 mJ

C

14 mJ

D

20mJ

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JEE MAINS PREVIOUS YEAR-JEE MAIN 2021-PHYSICS SECTION B
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