The maximum space rate of the function which is increasing direction of the function is known as

1. curl of the vector function
2. gradient of the scalar function
3. divergence of the vector function
4. stokes theorem

Answer : gradient of the scalar function

The skin effect in a transmission line is affected by

1. The resistivity  of the transmission line
2. the current magnitude in the transmission line
3. the cross sectional area of the transmission line
4. the voltage applied across the transmission line

Answer : The cross sectional area of the transmission line