1.

Two opposite and equal charges 4 xx10^(-8) coulomb when placed 2 xx 10^(-2) cm away, from a dipole. If this dipole is placed in an external electric field 4 xx 10^8 newton/coulomb, the value of maximum torque and the work done in rotating it through 180^@ will be

Answer»

`64 xx 10^(-4)`Nm and `64 xx 10^(-4)J`
`32 xx 10^(-4)`Nm and `32 xx 10^(-4)J`
`64 xx 10^(-4)`Nm and `32 xx 10^(-4)J`
`32 xx 10^(-4)`Nm and `64 xx 10^(-4)J`

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