Basic Electrical Theory

Question 1

What are atoms made up of?

Answer 1

Protons (positive)
Neutrons (neutral)
Electrons (negative)

Question 2

Which way do electrons flow?

Answer 2

Negative (-) to Positive (+)

Question 3

What are the three main components of an atom?

Answer 3

Protons (positive)
Neutrons (neutral)
Electrons (negative)

Question 4

In which direction do electrons flow in a circuit?

Answer 4

Negative (-) to Positive (+)

Question 5

What is the conventional direction of current flow?

Answer 5

Positive (+) to Negative (-)

Question 6

Difference between a Conductor and an Insulator?

Answer 6

Conductor- Allows current flow
Insulator- Resists current flow

Question 7

What is the formula for Ohm’s Law?

Answer 7

V = IR
Voltage = Current x Resistance

Question 8

How does wire thickness affect resistance?

Answer 8

There is higher resistance in thinner or longer wires

Question 9

What is DC current? How does it flow?

Answer 9

Direct Current- Flows in one direction, powered by Electro-Motive Force (EMF)

Question 10

What is AC? How does it flow?

Answer 10

Alternating Current- Flows back and forth