A test change of 1.6 xx 10^(-19) C is m...

A test change of `1.6 xx 10^(-19) C ` is moving with velocity `vec v = (4 hati + 3hatk) ms^(-1)` in a magnetic field `vec B = (3 hatk + 4hati)T.` The force on this test charge is :

`24 hatj N`

`-24 hati N`

`24 hatkN`

`0`

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