Physics Test 2 (Electromagnetic Induction)

Power is transmitted at high voltages because the corresponding current in the wires is...

Four amperes of current exist in the primary coil of a transformer. The voltage across the primary coil is 110 V. What is the power output of the secondary coil?

Neon signs require 12000 volts to operate. If the circuit uses a 120-volt power source, the ratio of primary to secondary turns on the transformer should be...

The principal advantage of AC power over DC power is that...

A certain transformer doubles input voltage. If the primary coil has 10 A of current, the the current in the secondary coil is...

A step-up transformer increases...

The output power of an ideal transformer is...

Transformers use AC so there will be the required...

A transformer actually transforms...

If the voltage produced by a generator alternates, it does so because...

A device that transforms electrical energy to mechanical energy is a...

If a magnet is pushed into a coil, voltage is induced across the coil. If the same magnet is pushed into a coil with twice the number of loops,

Electromagnetic induction occurs in a coil when there is a change in...

Thrust a magnet into a coil of wire and the coil...