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WorksheetsN2A-PRELIM
Total questions: 55
Worksheet time: 28mins
What is an electrical circuit?
A path or line through which an electrical current flows
A circle
A type of game
A conductor
What type of circuit is this?
Open
Closed
Short
Long
An insulator is...
A cold
Something that keeps you warm
A material that has a high resistance to electricity
A material that has a low resistance to electricity
Wood is an electrical conductor
True
False
A conductor is...
The bomb.com
Materials that have low resistance to electricity
Materials that have high resistance to electricity
A musician
Which one is an insulator?
Twine
Aluminium
Gold
Lead
Renewable energy is...
New
Old
Sustainable
The best
What are the four main features of an electrical circuit?
Water, Bulb, Switch, Wire
Battery, Wood, Bulb, Wire
Switch, Sun, Wire, Playdough
Wire, Bulb, Battery, Switch
What is the unit of measurement for resistance?
Voltage
Ampere
Watts
Ohms
the formula to find current when the values of V and R are known is
I = V2R
I = V/R
I = R/V
I=VR
How do you calculate resistance?
Current x Voltage
Voltage x Power
Voltage ÷ Current
Current ÷ Voltage
Which of the following has this circuit symbol?
diode
fixed resistor
filament lamp
A student wants to investigate what happens to the resistance of a wire when longer wire is used. What is the most suitable control variable?
resistance
length
temperature of wire
voltage of power supply
current in circuit
If the current through a resistor is 2A and the voltage across it is 12V, what is the resistance
12Ω
6Ω
24Ω
0.167Ω
What type of circuit is this?
Series
Parallel
Complicated
Simple
An ammeter in a circuit measures current. What reading will all 3 of these ammeters show?
All 3 will show the same current
Ammeter 1 + 3 will be the same
All 3 will show a different current
Ammeter 2 + 3 will be the same
If Ammeter 1 + 4 both show a current of 4 amps. What will Ammeter 2 + 3 show?
Ammeter 2 = 4 amps & Ammeter 3 = 4 amps
Ammeter 2 = 2 amps & Ammeter 3 = 2 amps
Ammeter 2 = 1 amps & Ammeter 3 = 3 amps
Ammeter 2 = 3 amps & Ammeter 3 = 1 amps
A circuit has a current of 2 amps and a voltage of 10 volts. Calculate the resistance of this circuit.
20 Ω
5 Ω
8 Ω
12 Ω
In a ____________________ circuit, all of the lightbulbs are connected in one path.
A. parallel
B. series
C. complete
D. perpendicular
Which of the following material is a good insulator of electricity?
A. copper
B. gold
C. steel
D. plastic
Why doesn't the lightbulb shown below light up when used in a circuit?
A. The flow of electricity needs a closed circuit and the lightbulb is broken.
B. The flow of electricity needs a circular circuit and the lightbulb is broken.
C. The flow of light current needs a closed circuit and the lightbulb is broken.
D. These type of lightbulbs don't work in a circuit.
The lightbulb in the circuit below will not work because
A. the lightbulb is broken
B. the battery is dead
C. there is no switch
D. the wires are connected incorrectly
A group of students built the circuit shown above. The lightbulb does not glow. Which statement explains the observation?
A. The battery is not charged.
B. The lightbulb is not part of a closed circuit.
C. The circuit does not have a switch.
D. The bell uses most of the energy from the battery.
What is voltage?
The potential difference in a circuit
The voltage at ground
The amount of energy going through a component in a circuit
The amount of energy that goes through a resistor
What is a node?
Where a circuit turns
An electrical junction
A character used to promote Dominos Pizza
A wire
Current is measured in what?
mili amps
Amps
Watts
Ohms
1.An electric current can produce
heating effect only.
chemical effect only.
magnetic effect only.
chemical, heating, and magnetic effects.
Which one of the following solutions will not conduct electricity?
lemon juice
vinegar
tap water
vegetable oil
The object to be electroplated is taken as ____________ electrode.
cathode
anode
electrode
none of these
An electrolyte is
a metal
a solution
a liquid that conducts current
all of above
Flow of electron is called
Electroplating
Electric current
Electrodes
Electrolyte
the phenomenon of decomposition of an electrolyte when electricity is passed through is known as
conduction
coating
electrolysis
electrorefining
the electrode connected to the negative terminal of a battery is known as
anode
negative pole
cathode
electrolyte
electrolyte that ionise completely to form free mobile ions in the solution is known as
strong electrolytes
weak electrolytes
cathode
anode
conductors can allow electricity because of the presence of
free ions
free electrons
free protons
atoms
sea water is an example of
bad conductor
strong electrolyte
weak electrolyte
none of these
the method of purification of metals by using electricity is known as
electroplating
electrorefining
electrometal
none of these
(I X R)
Negatively (-) charged particles around the nucleus of an atom
atom
electron
proton
Law of electric charges states
opposite charges attract and like charges repel
opposite charges repel and like charges repel
charges neither attract or repel
The space around a charged object in which another object experiences an electric force.
Law of electric charges
friction
electric field
The three ways in which an object gets charged
friction, conduction, induction
electric field, electric charge, electric current
conductor, insulator, static electricity
Plastic is an example of an insulator
true
false
Material in which charges can move freely
insulator
electric discharge
conductor
The flow of electrons around a circuit
current electricity
battery
alternating current
Current that runs in one direction
Direct Current (DC)
Alternating Current (AC)
Electric Current (EC)
The release of electricity stored in a source is called
electric discharge
static electricity
electric force
Atoms have an equal number of protons and electrons which cancel each other out.
true
false
SI unit of current is _____
Volt
Ampere
Coulomb
Watt
