A unifrom conducting wire `ABC` has a mass of `10g`. A current of `2 A` flows through it. The wire is kept in a unifrom magnetic field `B = 2T`. The accleration of the wire will be

Options

A. Zero
B. `12 ms^(-2)` along y - axis
C. `1.2 xx 10^(-3) ms^(-2)` along y-axis
D. `0.6 xx 10^(-3) ms^(-2)` along y-axis

Answer

B

Explanation

`F_(AC) =` Bil
`=2 xx 2 xx 3 xx 10^(-2)`
`= 12 xx 10^(-2) N` (along y-axis)
`a = (F)/(m) = (12 xx 10^(-2))/(10 xx 10^(-3)) = 12 m//s^(2)`