WorksheetsElectricity
Total questions: 55
Worksheet time: 30mins
Name
Class
Date
1.
What does the current in the circuit depend on?
a)
The resistance
b)
The voltage
c)
Both, the resistance and the voltage
d)
Neither
2.
A material in which electrons are able to move easily
a)
Circuit
b)
Insulator
c)
Resistance
d)
Conductor
3.
Electric current that flows in only one direction.
a)
Voltage
b)
Direct Current
c)
Alternating Current
d)
Series Circuit
4.
A material in which electrons are not able to move easily
a)
Circuit
b)
Insulator
c)
Resistance
d)
Conductor
5.
Electric current that reverses its direction of flow in a regular pattern
a)
Voltage
b)
Direct Current
c)
Alternating Current
d)
Parallel Circuit
6.
The process of transferring charge by touching or rubbing
a)
Induction
b)
Conduction
c)
Friction
d)
Conductor
7.
The flow/movement of electric charges
a)
Voltage
b)
Resistance
c)
Current
d)
Circuit
8.
This is related to the force that causes electric charges to flow
a)
Voltage
b)
Current
c)
Resistance
d)
Circuit
9.
A closed path that electric current follows
a)
Voltage
b)
Current
c)
Resistance
d)
Circuit
10.
The tendency for a material to oppose the flow of electrons, changing electrical energy into thermal energy and light.
a)
Voltage
b)
Current
c)
Resistance
d)
Circuit
11.
The current has only has one loop to flow through in this circuit.
a)
Series Circuit
b)
Parallel Circuit
12.
This circuit contains two or more branches for current to move through.
a)
Series Circuit
b)
Parallel Circuit
13.
Electric current is the flow of:
a)
electrons
b)
protons
c)
neutrons
d)
none of these
14.
A bulb of 100 W means that it will consume electrical energy at the rate of:
a)
100 kJ per second.
b)
100 kJ per hour.
c)
100 joules per second.
d)
100 joules per hour.
15.
Potential difference between any two points is measured in:
a)
volts
b)
joules
c)
coulombs
d)
none of these
16.
The fuse wire should have a:
a)
low melting point.
b)
very high melting point.
c)
high melting point.
d)
none of these.
17.
A flow of very large current due to direct contact of a live and neutral wire is called __________.
a)
overloading
b)
Earth
c)
short-circuit
d)
potential difference
18.
Homes are wired in __________.
a)
series circuit
b)
parallel circuit
c)
kilowatt-hour
d)
negative, positive
19.
When we turn the switch to the off position the circuit is __________.
a)
closed
b)
open
c)
negative, positive
d)
overload
20.
When you remove a bulb from a three bulb circuit, and the other two bulbs go off, then the bulbs must have been connected in __________.
a)
parallel
b)
series
c)
open
d)
closed
21.
When you attach a wire to both terminals of a dry cell, the electrons flow from the __________ terminal to the __________ terminal.
a)
negative, positive
b)
positive, negative
c)
negative, neutral
d)
neutral, positive
22.
A closed circuit has its every part made of __________.
a)
electric current
b)
conducting material
c)
dynamo
d)
cell
23.
When a circuit is closed the electric current does not flow through it.
a)
True
b)
False
24.
Glass is a good conductor.
a)
True
b)
False
25.
Which circuit will light up?
a)
A, B
b)
B, C
c)
C, D
d)
D, F
26.
What is the difference between series and parallel connections?
a)
In parallel circuits the current flows through two or more paths while in series circuits the current flows along a single path.
b)
In series circuits the current flows through two or more paths while in parallel circuits the current flows along a single path.
c)
The cohesiveness of parallel circuits dtermines their vicosity while in series circuits it is the inverse of their amplitude that determines their internal accuracy.
d)
None of these answer choices are correct.
27.
Calculate the electric power of an electrical appliance in which 10 A of current is flowing through a resistor of 2 ohms.
Remember: V=IR and P=VI
Remember: V=IR and P=VI
a)
80 W
b)
200 W
c)
2.5 A
d)
22.5 KJ
28.
Does this statement best describe a parallel or a series circuit.
When more light bulbs are added they all remain bright.
When more light bulbs are added they all remain bright.
a)
Parallel circuit
b)
Series circuit
29.
Does this statement best describe a parallel or a series circuit.
Different currents flow through each resistor.
Different currents flow through each resistor.
a)
Parallel circuit
b)
Series circuit
30.
Does this statement best describe a parallel or a series circuit.
If one part of the circuit fails, the other parts still work.
If one part of the circuit fails, the other parts still work.
a)
Parallel circuit
b)
Series circuit
31.
The total resistance of a parallel circuit is always...
a)
greater than the sum of all the individual resistances.
b)
greater than any of the individual resistances.
c)
equalto the smallest of the individual resistances.
d)
less than any of the individual resistances.
32.
When another resistor is added to a parallel circuit, the total current...
a)
goes up.
b)
goes down.
c)
is unaffected.
33.
An ampere is unit of
a)
temperature
b)
electric current
c)
length
d)
magnetic force
34.
When you scuff your feet on a rug, electric charges move off you by
a)
static discharge
b)
friction
c)
static discharge
d)
conduction
35.
What causes current to flow?
a)
potential difference
b)
energy
c)
electricity
d)
magnetism
36.
An example of a voltage source is a(n)
a)
magnet
b)
electrical wire
c)
battery
d)
a resisitor
37.
According to Ohm's law, Resistance is equal to to voltage divided by:
a)
potential difference
b)
conduction
c)
time
d)
current
38.
In a series circuit with 4 bulbs:
a)
a switch is never used
b)
all of the bulbs become dimmer if another bulb is added
c)
There are many paths for electricity to take
d)
the remaining 3 bulbs stay lit if one burns out
39.
In a series circuit with 4 bulbs:
a)
a switch is never used
b)
all of the bulbs become dimmer if another bulb is added
c)
There are many paths for electricity to take
d)
the remaining 3 bulbs stay lit if one burns out
40.
In a series circuit, the electric current
a)
has many paths
b)
has one path
c)
only flows to a light bulb
d)
only travels away from a battery
41.
What would happen if you took one bulb out of a series circuit?
a)
The circuit would be closed
b)
It would not change the circuit
c)
You would create a short circuit
d)
None of the other bulbs would light
42.
Which will not allow electrical current to flow?
a)
a closed circuit
b)
an open current
c)
a series circuit
d)
a parallel circuit
43.
Which of the following would be components of a closed circuit?
a)
Wire, battery, light bulb
b)
Battery, light bulb, motor
c)
Motor and battery
d)
Wire, battery, open switch
44.
Ms Jo Jo rubbed two balloons with a piece of wool. What will happen when the balloons are brought near each other?
a)
The balloons will repel each other.
b)
The balloons will attract each other.
c)
The balloons will become positively (+) charged.
d)
The balloons will pop.
45.
The difference between attract and repel is that to attract is to pull something closer and repel is to push something away.
a)
True
b)
False
46.
What is a circuit?
a)
A pathway that electricity flows in. It has a load, wire, and a taco
b)
A pathway that protons flow in. It has a load, wire, and a power source.
c)
A pathway that electricity flows in. It has a load, wire, and a power source.
d)
A pathway that electricity flows in. It has a load and wire.
47.
What is # 3 pointing to in the diagram?
a)
base contact
b)
button contact
c)
support wires
d)
filament
48.
An ampere is unit of
a)
temperature
b)
electric current
c)
length
d)
magnetic force
49.
Does this diagram represent a series or parallel circuit?
a)
series circuit
b)
parallel circuit
50.
Does this diagram represent a complete or incomplete circuit?
a)
Complete
b)
Incomplete
51.
What type of circuit will have dimmer bulbs because the energy is shared equally among the bulbs?
a)
series circuit
b)
parallel circuit
52.
Which type of circuit will have brighter bulbs because each one has it's own path to the energy source?
a)
series circuit
b)
parallel circuit
53.
Does this diagram represent a series or parallel circuit?
a)
series circuit
b)
parallel circuit
54.
Does this diagram represent a series or parallel circuit?
a)
series circuit
b)
parallel circuit
55.
What part of a circuit is this object?
a)
energy source
b)
load (resistor)
c)
electrical conductor
d)
switch
100 %
