WorksheetsF2 1st Exam 1
Total questions: 14
Worksheet time: 28mins
Which of the following is NOT a source of electricity or electrical energy?
Power bank
Electric cell
Electric wire
Mains socket
Which of the following is/are electrical conductors?
(1) Copper
(2) Graphite
(3) Diamond
(1) only
(2) only
(1) and (2) only
(2) and (3) only
Which part(s) of the following switch is/are electrical conductors?
P only
Q only
P and R only
Q and R only
Which light bulb(s) in the above circuits will NOT light up?
Bulb 1 only
Bulb 2 only
Bulb 1 and bulb 2 only
Bulb 2 and bulb 3 only
Which of the following statements about free electrons is correct?
Free electrons carry positive charge.
All electrons in a metal can escape from the atoms and move freely within the metal.
Free electrons are attracted to the positive pole of an electric cell.
The flow of free electrons forms an electric voltage.
When an electric current flows through a wire or a coil, the needle on a compass nearby changes direction because of
the electrical energy produced.
the heating effect of the electric current.
the magnetic effect of electric current.
both the heating effect and magnetic effect of the electric current.
Which of the following statements about an ammeter is correct?
An ammeter can measure the number of electrons in an electric circuit.
The smaller the reading of an ammeter, the larger the electric current.
The unit of the reading on an ammeter is volt (V).
The positive terminal of an ammeter should be connected to the positive pole of an electric cell.
Which of the following are daily applications of the heating effect of electric current?
(1) Electric iron
(2) Fuse
(3) Toaster
(1) and (2) only
(1) and (3) only
(2) and (3) only
(1), (2) and (3)
Which of the following statements about the relationship between voltage and current is correct?
The current in a circuit increases with the voltage.
The current in a circuit decreases with the voltage.
The current in a circuit first increases and then decreases with the voltage.
The current in a circuit first decreases and then increases with the voltage.
Which of the following statements about resistance are correct?
(1) The resistance of a material measures the opposition of the material to the flow of electric current.
(2) The larger the resistance in a circuit, the smaller the electric current.
(3) Rheostat has a larger resistance than resistor.
(1) and (2) only
(1) and (3) only
(2) and (3) only
(1), (2) and (3)
The four wires in the following circuit are made of the same material. The switch can be connected to positions A, B, C or D. At which position is the reading of the ammeter the smallest?
A
B
C
D
Which of the following circuits can turn on or off the two light bulbs at the same time?
(1) and (2) only
(1) and (3) only
(2) and (3) only
(1), (2) and (3)
Look at the circuit below. The two bulbs and three ammeters are identical.
If the reading of ammeter A1 is 1 A, what are the readings of A2 and A3?
Reading of ammeter A2: 1A
Reading of ammeter A3: 1A
Reading of ammeter A2: 0.6A
Reading of ammeter A3: 0.4A
Reading of ammeter A2: 0.5A
Reading of ammeter A3: 0.5A
Reading of ammeter A2: 0.4A
Reading of ammeter A3: 0.6A
Which of the following combinations is correct?
Earth wire: Brown
Live wire: Blue
Neutral wire: Green and yellow
Earth wire: Blue
Live wire: Green and yellow
Neutral wire: Brown
Earth wire: Blue
Live wire: Brown
Neutral wire: Green and yellow
Earth wire: Green and yellow
Live wire: Brown
Neutral wire: Blue
