Q4 of 30 Page 338

A wire carries an alternating current i = i0sinωt. Is there an

electric field in the vicinity of the wire?


Given: Alternating current


The current is the rate of flow of charge per unit time. Mathematically


For a time, t, we can assume the charges in the wire are at rest,


then the charge will be given as



Similarly, a no. of charges can be assumed to be at rest. These


charges produce a time varying electric field.


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