**1. The problem statement, all variables and given/known data**

A solenoid has a radius of 2.10 cm and 1180 turns per meter. Over a certain time interval the current varies with time according to the expression I = 1.30t, where I is in amperes and t is in seconds. Calculate the electric field 4.65 cm from the axis of the solenoid

**2. Relevant equations**

**3. The attempt at a solution**

I have no idea where to start.

http://ift.tt/1eehxfY