Electronics Week 1

Question 1

Protons and Electrons

Answer 1

Protons = Postive Charge; Electrons = Negative Charge

Question 2

Conductors

Answer 2

Will give up or accept extra electroncs more easily than other materials (metals, copper, gold, silver)

Question 3

Insulators

Answer 3

is resistant to releasing or accepting electrons (rubber, cloth, air)

Question 4

Resistors

Answer 4

restrict current flow (carbon, some metals). Resistance can be varied by adding impurities

Question 5

Electrical Flow

Answer 5

an electron is freed from an atom and it collides with a second atom which accepts it and throws off one of its own. Like charges repel each other and unlike charges attract each other

Question 6

Electromotive Force (Voltage)

Answer 6

The difference in electrical charge between two points in a circuit (the push that causes electrical flow)

Question 7

Power

Answer 7

How much work is being done; P = E x I (Watts = Voltage x Amps)

Question 8

OHMS Law

Answer 8

E (Voltage) = I (Current) x R (Resistance)

Question 9

Series Resistors

Answer 9

Add them together (R1 + R2+ R3…)

Question 10

Parallel Resistors

Answer 10

Reciprocal addition 1/ R total ( 1/r1 + 1/r2 + 1/r3… )