C At a small power station, the generator produces alternating current at a voltage of 10KV. This must be reduced to 415 V for use in a factory
The transformer used for this purpose has a primary coil of 2000 turns. How many turns must its secondary con
have?

the electric field is a “force field” around a charged object that illustrates the direction the electric force would push an imaginary 

e/c, where e is its total energy

snell's law

refractve index = sin incidence / sin refraction

magnets not strong enough

explanation: