1. An electron moves to the left with a velocity of 3.2 x 105 m/s and has a magnetic force of 5.6 x 10-17 N exerted on it. What is the magnitude of the magnetic field? Assume the charge has a value of 1.60 x 10-19 C.
2. The maximum current output of an 18 ? circuit is 12 A. What is the rms voltage of the circuit?
3.. A step-down transformer used in an automobile has a potential difference across the primary of 1800 V and a potential difference across the secondary of 12 V. What is the ratio of the number of turns of wire on the primary to the number of turns on the secondary?
Please show work on how you got the answers.