1. 7J Revision Quiz

2. a) Cell
b) Buzzer
c) Capacitor
d) Battery

3. Which materials are good conductors?
Glass
Plastic
Metals
Wood

4. When current is high in a current, resistance is:
Low
The same

5. Resistance is:
Current x voltage
The opposing force which stops current from flowing
Increased when you add more components
All of the above

6. a) b) c) d)

7. If a short, thick wire has a lower resistance than a short, thin wire
If a short, thick wire has a lower resistance than a short, thin wire. At the same voltage, the thick wire circuit will have: a) A lower current than the thin wire b) A higher current than the thin wire c) A lower voltage than the thin wire d) A higher voltage than the thin wire

8. What is the reading on the second ammeter?

9. What two things can happen when a person has a bad electric shock
What two things can happen when a person has a bad electric shock? Write down 2 answers: a) Your hair goes all frizzy b) You can’t walk any more c) The heart can stop and nerves can be damaged d) There is no lasting damage

10. The job of this component is to:
a) Make sure the electrons flow
b) Complete the circuit
c) Push the electrons round a circuit and give them energy

11. What current shows on each branch of the parallel circuit?

12. The human body has a high resistance.
If a person gets an electrical shock of 15V, only a small current flows through the person.
Why would they have a much worse shock with 230V?
A low current flows through the person’s body with 230V
A much higher current flows with 230V
There is a much higher resistance