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WorksheetsElectricity Test- Morris
Total questions: 51
Worksheet time: 1hrs 9mins
Name
Class
Date
1.
The accumulation of excess electric charge on an object is called
a)
Static electricity
b)
Electric discharge
c)
Resistance
d)
Circuit
2.
According to this law, a charge can be transferred from object to object, but it cannot be created or destroyed.
a)
Law of Conservation of Energy
b)
Newton's Third Law
c)
Law of Conservation of Charge
d)
Ohm's Law
3.
A material in which electrons are not able to move easily
a)
Circuit
b)
Insulator
c)
Resistance
d)
Conductor
4.
The process of transferring charge by touching or rubbing
a)
Induction
b)
Conduction
c)
Friction
d)
Conductor
5.
The rearrangement of electrons on a neutral object caused by a nearby charged object
a)
Induction
b)
Conduction
c)
Friction
d)
Conductor
6.
Electric current that flows in only one direction.
a)
Voltage
b)
Direct Current
c)
Alternating Current
d)
Series Circuit
7.
Electric current that reverses its direction of flow in a regular pattern
a)
Voltage
b)
Direct Current
c)
Alternating Current
d)
Parallel Circuit
8.
The flow/movement of electric charges
a)
Voltage
b)
Resistance
c)
Current
d)
Circuit
9.
This is related to the force that causes electric charges to flow
a)
Voltage
b)
Current
c)
Resistance
d)
Circuit
10.
A closed path that electric current follows
a)
Voltage
b)
Current
c)
Resistance
d)
Circuit
11.
According to this law, the current in a circuit equals the voltage difference divided by the resistance.
a)
Law of Conservation of Energy
b)
Ohm's Law
c)
Law of Conservation of Charges
d)
Newton's First Law
12.
This circuit contains two or more branches for current to move through.
a)
Series Circuit
b)
Parallel Circuit
13.
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.
14.
What charge does an electron have?
a)
negative (-)
b)
positive (+)
c)
neutral or no charge (0)
15.
An example of an insulator is:
a)
iron
b)
silver
c)
copper wire
d)
rubber
16.
The picture shows an electrical circuit. This circuit is a series circuit because:
a)
It has 3 light bulbs.
b)
The same current flows through all three light bulbs.
c)
It uses a single battery.
d)
The electrical current is divided between the three light bulbs.
17.
Which of these causes electrically charged objects to attract or repel each other?
a)
An equal number of protons.
b)
An equal number of electrons.
c)
An unequal number of electrons.
d)
An unequal number of molecules.
18.
What is the unit of electrical power?
a)
watt
b)
volt
c)
ampere
d)
ohm
19.
Which of the following statements describes the interaction between magnetic poles?
a)
Like poles repel each other, and opposite poles attract each other.
b)
Like poles attract each other, and opposite poles repel each other.
c)
Opposite poles repel each other.
d)
Like poles attract each other.
20.
What is the unit of electrical power?
a)
watt
b)
volt
c)
ampere
d)
ohm
21.
An example of a conductor is :
a)
a glass paperweight
b)
a plastic cap
c)
a metal screw
d)
a wooden handle
22.
Potential difference between any two points is measured in:
a)
volts
b)
joules
c)
coulombs
d)
none of these
23.
All wires used in electric circuits should be covered with:
a)
a colored material.
b)
a conducting material.
c)
an insulating material.
d)
none of these.
24.
If a person touches a live wire, he or she gets a severe:
a)
circuit
b)
electric shock
c)
overloading
d)
Earth
25.
Homes are wired in __________.
a)
series circuit
b)
parallel circuit
c)
kilowatt-hour
d)
negative, positive
26.
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
27.
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
28.
Electricity used in homes is generated in __________.
a)
power plant
b)
dynamo
c)
cell
d)
conductor
29.
Find the odd-one out:
Plastic
Rubber
Glass
Silver
Plastic
Rubber
Glass
Silver
a)
Plastic
b)
Rubber
c)
Glass
d)
Silver
30.
Find the odd-one out:
Water heater
Electric coffee maker
Electric iron
Electric fuse
Water heater
Electric coffee maker
Electric iron
Electric fuse
a)
Water heater
b)
Electric coffee maker
c)
Electric iron
d)
Electric fuse
31.
The human body is a good conductor of electricity. WHen a strong current flows through the body it produces violent muscular contractions and the person receives a shock. These shocks can damage body cells and can sometimes be fatal.
a)
True
b)
False
32.
What is the difference between conductors and insulators?
a)
Conductors are the substances which allow the current to flow through them with ease while insulators do not allow the current to flow through them with ease.
b)
Insulators are the substances which allow the current to flow through them with ease while conductors do not allow the current to flow through them with ease.
c)
Conductors and insulators are simply two forms of the same type of material, used to regualt ethe flow of electrons through capacitors.
d)
None of these answer choices are correct.
33.
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.
34.
There are two types of charges, they are:
a)
Positive charges and negative charges.
b)
Positive charges and depressed charges.
c)
Optomistic charges and negative charges
d)
Positive charges and morose charges.
35.
What will be the current drawn by an electric bulb of 1000 W when it is connected to a source of 220 V?
Remember: I = P/V
Remember: I = P/V
a)
4.55 A
b)
28800 J or 28.8 KJ
c)
80 W
d)
200 W
36.
A current of 4 A flows through a 12 V car headlight bulb for t10 minutes. How much electrical energy is consumed during this time?
Remember: W=VIt
Remember: W=VIt
a)
28800 J or 28.8 KJ
b)
600 s
c)
4.55 A
d)
120 V
37.
Electric current is measured in amperes (A) by using an instrument called:
a)
Ammeter
b)
Ohmmeter
c)
Voltmeter
d)
Calorimeter
38.
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
39.
Calculate the electric power of an electrical appliance of 20 V having a resistance of 10 ohms.
Remember: I=V/R and P=VI
Remember: I=V/R and P=VI
a)
200 W
b)
80 W
c)
2.5 A
d)
79.20 KJ
40.
Calculate the electrical energy consumed when a potential difference of 5 V is applied across a resistor of 2 ohms for 30 minutes.
Remember: V=IR and I=V/R
Remember: V=IR and I=V/R
a)
80 W
b)
200 W
c)
22500 J or 22.5 KJ
d)
4500 J or 4.5 KJ
41.
A current of 0.5 A flows through a resistance of 10 ohms for half an hour. Find the amount of electrical energy consumed by the resistance.
Remember:
V = IR
P = VI
E = Pt
Remember:
V = IR
P = VI
E = Pt
a)
22500 J or 22.5 KJ
b)
4500 J or 4.5 KJ
c)
79.2 W
d)
2.5 A
42.
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
43.
Does this statement best describe a parallel or a series circuit.
Different voltages are dropped across each resistor.
Different voltages are dropped across each resistor.
a)
Parallel circuit
b)
Series circuit
44.
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
45.
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.
46.
When switch is turned on the circuit is?
a)
Open
b)
Closed
47.
When switch is turned off the circuit is?
a)
Open
b)
Closed
48.
Is this circuit open or closed?
a)
Closed
b)
Open
49.
Is this circuit closed?
a)
Yes
b)
No
50.
Which is not an insulator?
a)
Wood Block
b)
Glass
c)
Eraser
d)
Water
51.
Which is not a Conductor?
a)
Foil
b)
Penny
c)
Iron
d)
Rubber
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