My neighbor opened the tuner circuit of his radio and noticed that it uses a 4.5 microHertz inductor together with a variable capacitor that ranges from 0.32 picoFarad to 1.28 picoFarad.
1. What is the highest frequency that his radio can tune in?
A circular coil of radius 6.0 cm has 1500 turns and a total resistance of 0.25. Initially it is in a region with a uniform magnetic field of 0.25 T perpendicular to the coil area. The coil is removed from the region of magnetic field in a time of 50.0 microseconds.
1. Find the average emf induced in the coil.