Electricity

Question 1

Electric charge

Answer 1

A property of matter that experiences a force when next to other charges or in an electric field

Question 2

Electric field

Answer 2

Region where charges experience a force

Question 3

What does the direction of a magnetic field show you?

Answer 3

It shows you the direction of the force on a positive charge

Question 4

Insulators

Answer 4

Materials that do not conduct electricity because they don’t have free electrons

Question 5

Conductors

Answer 5

Materials that conduct electricity because they have free electrons

Question 6

Electrons are ________ charged

Answer 6

negatively

Question 7

We can charge insulators by what?

Answer 7

Rubbing 2 insulators together. One material will lose electrons and one will gain electrons therefore one is positively charged and one is negatively charged.

Question 8

What is the purpose of an electrical circuit?

Answer 8

Deliver electrical energy from a supply to a device

Question 9

When we say close the switch this means that the switch is _____

Answer 9

ON

Question 10

Current (Definition and unit)

Answer 10

Rate of flow of charge
Ampere (A)

Question 11

Voltage (Definition and unit)

Answer 11

Energy per unit of charge
Voltage (V)

Question 12

Resistance (Definition and unit)

Answer 12

Property of matter that resists flow of charges
Ohm (Ω)

Question 13

Potential difference and EMF

Answer 13

Potential difference and EMF both mean voltage but Potential Difference is the voltage across a component whilst EMF is the voltage of a power supply. Potential difference shows the energy lost and EMF shows the energy gained.