A uniform magnetic field is applied perpendicular to the plane of a 80-turn circular coil with a radius of 8.0 cm and a resistance of 0.5 Ohms. If the magnetic field increases from 0.10 T to 2.4 T in 0.3 s:
a) what is th change in flux in the coil (with unit?)?
b) what is the emf induced in that coil?
c) what current is created in the coil due to the emf induced?