A 1.2-m radius cylindrical region contains a uniform electric field along the cylinder axis. It is increasing uniformly with time. To obtain a total displacement current of 2.0x10-­9 A through a cross section of the region, the magnitude of the electric field should change at a rate of:

The magnitude of rate of change of electric field is .

Explanation:

Given that,

Radius of the cylindrical region contains a uniform electric field along the cylinder axis, r = 1.2 m

Total displacement current through a cross section of the region,

We need to find the rate of change of electric field. Its is given by the formula as follows :

So, the magnitude of rate of change of electric field is .

need to see circuit to get time constant