# Electric Field Outside Solenoid#

## Question Text#

The current in a long solenoid of radius $${{params.R }}\rm\ {cm}$$ and $${{params.n }}\rm\ {turns/cm}$$ is varied with time at a rate of $${{params.DI }}\rm\ {A/s}$$. Find the magnitude of the electric field at a distance of $${{params.r }}\rm\ {cm}$$ from the center of the solenoid.

$$E=$$ $$\rm\ {N/C}$$