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An electric field of 1500 V/m and a magn...

An electric field of 1500 V/m and a magnetic field of 0.40 weber/metre act on a moving electron. The minimum uniform speed along a straight line the electron could have is

A

`1.6 xx 10^15 m//s`

B

`6 xx 10^-6 m//s`

C

`3.75 xx 10^3 m//s`

D

`3.75 xx 10^2 m//s`.

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