Font size
WorksheetsF2 Science Unit 8 Subtopic 1-5 Quiz
Total questions: 25
Worksheet time: 14mins
All non-metals are electrical insulators.
True
False
Hair dryers make use of the heating effect of current.
True
False
A voltmeter is a device for measuring the size of a current.
True
False
Good conductors have a high resistance.
True
False
We should connect an ammeter to a circuit in parallel to measure the current of a circuit.
True
False
We measure the size of a current with an (a) .
Variable resistors are also called (a) . They are resistors with variable resistance.
Materials that conduct current are called electrical (a) .
An atom consists of a positively charged nucleus which is surrounded by tiny negatively charged particles called (a) .
An (a) is a ‘magnet’ which can be turned on or off.
(a) is a measure of the amount of energy supplied to the free electrons by a source of electricity such as a dry cell.
Which of the following electric components is used to change a closed circuit to an open circuit?
Battery
Light bulb
Switch
Resistor
Which of the following is the circuit symbol for a resistor?
A circuit is connected as shown below.
Which of the following circuit components is NOT connected in the circuit above?
Voltmeter
Ammeter
Rheostat
Light bulb
Which of the following devices CANNOT be represented by the circuit symbol?
Which of the following is/are the characteristic(s) of electrical insulators?
(1) They contain little or no free electrons.
(2) Their nuclei are electrically neutral.
(3) Their atoms have no electrons.
(1) only
(1) and (3) only
(2) and (3) only
(1), (2) and (3)
What is the reading shown on the following ammeter?
2.3 A
2.6 A
3.2 A
3.4 A
Which of the following circuit components are necessary to make an electromagnet?
(1) Dry cell
(2) Switch
(3) Long piece of insulated wire
(4) Soft iron bar
All of the above
(1) and (3) only
(1) and (4) only
(1), (3) and (4) only
In which of the following circuit is the voltmeter correctly connected to measure the voltage across the light bulb?
A light bulb is connected to a battery, as shown below.
Which of the following graphs best shows how the brightness of the bulb varies with the number of cells in the battery?
Overhead power cables carry very high voltage. However, birds can stand on it without getting an electric shock. Which of the following is the best explanation?
Birds can allow a large current to pass through their bodies without harm.
The power cables do not carry a high voltage all the time.
The voltage across the legs of the bird is very low. Therefore, only a very small current passes through the bird.
The power cables are coated with an insulator and therefore electric current cannot flow to the bird.
Ohm is a unit of
current
voltage
resistance
power
In the following circuit, the copper rod has a resistance of 1Ω. If the copper rod is replaced with a 1Ω graphite rod, which of the following about the light bulb occurs?
The light bulb becomes dimmer.
The light bulb becomes brighter.
The brightness of the light bulb remains unchanged.
The light bulb goes off.
The following diagram shows a circuit with a loop of resistance wire. To which position on the wire should the clip be connected so that the bulb is the dimmest?
A
B
C
D
Below shows a circuit in which a sliding rheostat is connected.
If the sliding contact of the rheostat is moved to the right, which of the following statements is correct?
The brightness of the light bulb does not change.
The light bulb becomes brighter.
The light bulb becomes dimmer.
The light bulb burns out.
