Electricity

Question 1

What is static electricity?

Answer 1

a build up of charge in one place
e.g. balloon and hair

Question 2

What is current electricity?

Answer 2

A flow of charge from one place to another
e.g. turning on a light

Question 3

What is an electrical conductor?

Answer 3

Any object that easily allows charge to flow along it
e.g. Copper, gold

Question 4

What is an electrical insulator?

Answer 4

Any object that resists the flow of charges along it
e.g. wood

Question 5

What is a series circuit?

Answer 5

When 2 components are connected one after another in a circuit

Question 6

What is a parallel circuit?

Answer 6

When the electricity enters both bulbs at the same time

Question 7

What is voltage?

Answer 7

The force moving charge around the circuit

Question 8

What is the unit and symbol of voltage?

Answer 8

Volts (V)
Symbol: V

Question 9

What is current?

Answer 9

the amount of charge flowing past any point in the circuit

Question 10

What is the unit and symbol of current?

Answer 10

Amps (A)
Symbol: I

Question 11

What is resistance?

Answer 11

the characteristic of the materials in the circuit that opposes the flow of charge

Question 12

What is the unit and symbol of resistance?

Answer 12

Ohms ( )
Symbol: R

Question 13

What is a voltmeter?

Answer 13

measures the change in electrical potential from one side of a component to another

Question 14

What is an ammeter?

Answer 14

measures how much charge id flowing at any one point in a circuit

Question 15

What is a resistor?

Answer 15

Controls how much current can flow through a circuit

Question 16

What is an ohmeter?

Answer 16

Can be used to give you the resistance of any components

Question 17

What does Ohm’s Law state?

Answer 17

At a constant temperature, the amount of current passing through material is directly proportional to the voltage across it.
-This means that the greater the voltage, the greater the current