Copper has 8.0xx10^(28) conduction clect...

Copper has `8.0xx10^(28)` conduction clectrons per metre'. A copper wire of length `1 m` and cross-sectional area `8.0 xx10^(-5))m^(2) carrying a current and lying at right angle to a magnetic field of strenigth `5 xx 10^(-3)` 'T experiences a force of `8.0 xx 10^(-2) N`. If the drift velocity of free clectrons in the wire-is `1.56 xx 10^(-n)` m/s, then find `n`.

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