A long straight wire carries a certain current and produces a magnetic field 2 $ \times $ 10$-$4 Wb m$-$2 at a perpendicular distance of 5 cm from the wire. An electron situated at 5 cm from the wire moves with a velocity 107 m/s towards the wire along perpendicular to it. The force experienced by the electron will be (charge on electron 1.6 $ \times $ 10$-$19 C)
3.2 N
3.2 $ \times $ 10$-$16 N
1.6 $ \times $ 10$-$16 N
zero
Solution
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