review questions that are hard

Question 1

Voltage or Potential difference is the difference between ______________________________________________________________________.

Answer 1

energy per unit of charge between two different points in a circuit

Question 2

Nichrome wire has higher ___________ than normal copper wire.

Answer 2

resistance

Question 3

What 4 factors determine resistance of wires?

Answer 3

temperature, length, material and cross sectional area

Question 4

Kinetic and potential energy are the main 2 types of energy name 5 others

Answer 4

Electrical, thermal, chemical mechanical and light energy

Question 5

How did oersted and ampere discover a relationship between electricity and magnetism?

Answer 5

With a wire and a compass needle

Question 6

name the 5 main parts of electric motors and generators

Answer 6

Commutator, armature, brushes, magnet, and stator

Question 7

AC and DC are two types of motors which does and which does not use a split ring commutator?

Answer 7

DC does use a split ring commutator while AC does not