Transcript Quiz on Electricity and Circuits

Quiz on Electricity and Circuits
1. Light bulb converts electrical energy into
(i) chemical energy Only (i) and (ii)
(ii) light energy
(iii) heat energy
Only (i) and (iii)
Only (ii) and (iii)
(i)、(ii) and (iii)
2. Which of the followings are the
conditions for electricity to flow?
Only (i) and (ii)
(i) a source of
electrical energy
Only (i) and (iv)
(ii) a light bulb
(iii) a switch
(iv) a closed circuit (i)、(ii) and (iii)
(i)、(ii)、(iii)and (iv)
3.
Conductors allow electric current to flow
through. It is because
they have a lot of neutrons.
they have a lot of atoms.
they have a lot of free electrons.
they have a lot of protons.
4. The current flowing through a
domestic washing machine is
approximately
1A
2A
5A
10A
5.
Which of the following is used to limit
the size of current in a circuit?
ammeter
voltmeter
resistor
switch
6. Which of the following component in
circuit allows us to vary the resistance?
Ammeter
Voltmeter
Rheostat
Switch
7.
Which of the following is the symbol for a switch?
7.
Which of the following has the smallest resistance?
A piece of short and thick copper wire
A piece of long and thick copper wire
A piece of long and thick nichrome wire
A piece of short and thin nichrome wire
8. Which of the following electrical devices
should be connected in series?
Only (i) and (ii)
(i) ammeter
(ii) voltmeter
Only (ii) and (iii)
(iii) resistor
Only (i) and (iii)
(i)、(ii) and (iii)
9.
Which of the following about parallel circuit
is NOT correct?
There are 2 or more branches of electric
current in a parallel circuit.
Total current in the circuit equals to the
sum of current in all branches.
In a parallel circuit, if a bulb from one branch
burns out, bulbs from other branches will
not light up.
In a parallel circuit, the electric current is
larger in a branch with smaller resistance.
10.
Which of the following is the hottest one
when the same amount of current pass through
them?
A piece of short and thick copper wire
A piece of long and thick copper wire
A piece of long and thin nichrome wire
A piece of short and thin nichrome wire
11.
Which of the following electrical appliance is
NOT making use of the heating effect of electric
current?
Rice cooker
electric heater
Heat plate
electric doorbell
Which of the following acts like a fuse to protect
the circuit and prevent overloading ?
rheostat
switch
Circuit breaker
ammeter