Electricity and Magnetism

Question 1

Which magnetic pole is in Antarctica? How do you know?

Answer 1

Antarctica is in the south and so the magnetic North Pole is in Antarctica.

Question 2

Why are Christmas tree lights connected in parallel and not in series?

Answer 2

So that when one light bulb goes out, the others stay on.

Question 3

Describe the difference between Voltage and Current.

Answer 3

Current is the rate at which the electric charge flows past a point in a circuit.
Voltage is the potential difference in charge between two points in an electrical field.

Question 4

What is Ohm’s law?

Answer 4

The potential difference is directly proportional to the current flowing through it.
V=IR

Question 5

What is the difference between a conductor and an insulator? Examples?

Answer 5

Conductor conducts electrical current very well because of their free electrons. Copper, gold, aluminum, silver
Insulator impedes electrical current. Glass, wood, plastic, rubber, air.