Physics Quiz - Electricity
1. Static electricity occurs when:
A
two metals are connected to a battery
B
different insulators are rubbed together
C
the weather is very humid
2. Examples of static electricity include:
A
lightning
B
the Van de Graaff generator
C
both of the above
3. A flow of electrons along a wire is called:
A
electromagnetism
B
static electricity
C
current electricity
4. Substances that allow electricity to pass easily through them are:
A
conductors
B
resistors
C
insulators
5. Substances that do not allow electricity to pass through them are:
A
conductors
B
cells
C
insulators
6. Examples of conductors are:
A
dry wood and most plastics
B
the metal copper and the non-metal graphite
C
tap water and rubber
7. A simple electric cell is composed of:
A
different metals in water
B
two non-metals in an acidic solution such as sulphuric acid
C
2 electrodes in an electrolyte solution
8. A series of simple cells connected in series is called a:
A
battery
B
rechargeable cell
C
dry cell
9. Household circuits are mostly:
A
wired in parallel
B
series circuits
C
made using wires of aluminium
10. The instrument used to measure current is the:
A
ammeter
B
voltmeter
C
fuse
11. When a conductor such as a screwdriver lies across two circuits creating a shorter path for electron flow, what has been created?
A
a fuse
B
a series circuit
C
a short circuit
12. All households have a wire that carries extra surges of electricity down to the earth. This is called the:
A
circuit-breaker
B
earth
C
fuse
13. The type of current produced by batteries is:
A
alternating current
B
short circuit
C
direct current
14. Ohm' Law is:
A
Resistance = voltage X current
B
V = I X R
C
R = V X I
15. A device to change the voltage of an electric current is the:
A
transformer
B
ammeter
C
voltmeter
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