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Current Electricity concepts

Total questions: 46

Worksheet time: 45mins

Name
Class
Date
1.

What is Electric Current

a)

flow of electric current through a conduction

b)

flow of electric charges through a conduction

c)

flow of electric charges through an insulator

d)

flow of electric current through an insulator

2.

What is the SI unit for Electric Current?

a)

a

b)

A

c)

v

d)

V

3.

What measures current?

a)

Electroscope

b)

Meter

c)

Ammeter

d)

All of the above

4.

What is this symbol called?

a)

Ammeter

b)

Resistor

c)

Battery

d)

Voltage

5.

What is this symbol?

a)

Ammeter

b)

Resistor

c)

Battery

d)

Voltage

6.
A path that is made for an electric current is?
a)
Static electricity
b)
conductor
c)
A circuit
d)
resistor
7.
A voltmeter is described as a device that can be used to measure
a)
Voltage
b)
Current
c)
Resistance
d)
Power
8.
What is a formula to calculate Current
a)
I=Q/t
b)
I=Q*t
c)
I =V*R
d)
I = R/V
9.

Which of these is an example of current electricity?

a)

Placing a lightning rod on the roof of a house to attract lightning

b)

Rubbing a plastic pipe with a piece of wool to attract small pieces of paper

c)

Building a circuit using copper wire and a D cell battery

d)

Using a sheet of fabric softner in the dryer to help reduce static cling

10.
What is resistance measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
11.
Voltage is measured in __.
a)
volts.
b)
watts.
c)
coulombs. 
12.
the tendency for a material to oppose the flow of electrons
a)
current
b)
circuit
c)
resistance
d)
difference
13.
As the resistance of a circuit increases, the current will
a)
increase
b)
decrease
c)
stay the same
14.
The difference in electrical potential energy between two places is called
a)
resistance
b)
friction
c)
induction
d)
voltage
15.
The potential difference between the two ends of the wires is equal to the...
a)
resistance
b)
energy source current
c)
Potential difference between the two terminals of the battery
d)
the parallel end of the component
16.
The voltmeter is an instrument used to measure __________.
a)
potential difference
b)
kilowatt-hour
c)
overloading
d)
negative, positive
17.
What variable is a Coulomb the unit for?
a)
Charge
b)
Force
c)
Distance
d)
Mass
18.

Electric potential difference is...

a)

the product of kinetic energy and charge

b)

the product of potential energy and charge

c)

the change in kinetic energy per unit of charge

d)

the change in potential energy per unit of charge

19.
What is voltage?
a)
The amount of electric potential energy per one coulomb of charge
b)
The amount of 1 coulomb of charge per unit of potential energy
c)
The number of volts per coulomb
d)
The amount of electric potential energy per volt
20.
This is the circuit symbol for ...
a)
an AC current source
b)
a DC current source
c)
an ammeter
d)
a voltmeter
21.
This is the circuit symbol for ...
a)
an AC current source
b)
a DC current source
c)
an ammeter
d)
a voltmeter
22.
How much charge must pass by a point in 10 s for the current to be  0.50 A? 
a)
0,05C
b)
5,0C
c)
20C
d)
2,0C
23.
What is voltage?
a)

The flow of protons

b)
The number of charged particles that pass each second
c)
The difference in potential energy of charged particles
d)
The rate at which energy is being transformed
24.

Define electric current

a)

the total charge, Q flowing through the area per unit time, t.

b)

the total current, I flowing through the area per unit time, t.

c)

the rate of capacitance flow through a conductor.

d)

the rate of current flow through a conductor

25.

1 ampere of current is defined as ......

a)

one coulomb of current passing through the surface area in one second.

b)

one coulomb of charge passing through the conductor in one second

c)

one coulomb of charge passing through the surface area in one second

d)

one coulomb of currrent passing through the conductor in one second.

26.

If current flow in a bulb is 1.5A. What is the charge flow in 5 minutes?

a)

4.5x10exp-2 C

b)

4.5x10exp-2 A

c)

2.4x10exp-2 C

d)

2.4x10exp-2 A

27.
            is a measure of how difficult it is for an electric current to
flow in a material.
a)
electric current
b)
electric circuit
c)
electric resistance
28.
           The amount of energy used to move one coulomb of electrons through the circuit is
its 
a)
device
b)
voltage
c)
circuit
29.

Energy transformations occur when current flows through a circuit that has __________ ___________.

a)

voltage

b)

electric current

c)

electric resistance

d)

coulomb

30.

Electrical devices have ___________ electric resistance, while good conductors have ___________ electric resistance.

a)

high, low

b)

low, high

31.

The amount of energy used to move a ____________ (a/b) of electrons through the circuit is the ____________(c/d) of an electric energy source. (choose two)

a)

Hertz

b)

coulomb

c)

voltage

d)

watt

32.
What is a switch's function in a circuit?
a)
to make the current hotter or colder
b)
turn on and off the flow of current
c)
the pathway that current flows
d)
to add more power to the circuit
33.

What is voltage?

a)

The rate of flow of electrons

b)

The energy used to push electrons

c)

Slows down the current

d)

what the v is voltage??

34.

What is the unit for current?

a)

Amperes

b)

Voltage

c)

Coulomb's

d)

Ohm's

35.

The symbol for a battery or power source is _____ (2 answers needed).

a)
b)
c)
d)
36.

If the power source was set on 4.0V and there were 1 lights, what would the voltage be across the light?

a)

4.0 V

b)

2.0 V

c)

1.0 V

d)

0.0 V

37.
Unit for resistance
a)
Ampere
b)
Ohm
c)
Volt
d)
Watt
38.
As the resistance of a circuit increases, the current will
a)
increase
b)
decrease
c)
stay the same
39.
The difference in electrical potential energy between two places is called
a)
resistance
b)
friction
c)
induction
d)
voltage
40.
This is related to the force that causes electric charges to flow
a)
Voltage 
b)
Current
c)
Resistance
d)
Circuit 
41.
What variable is a Coulomb the unit for?
a)
Charge
b)
Force
c)
Distance
d)
Mass
42.
The movement of electrons from atom to atom in a line results in a flow of _____. 
a)
amperage.
b)
electric current.
c)
electromagnetic connectors. 
43.
A 12 volt battery supplies voltage to two bulbs. How much voltage would each bulb get?
a)
6 volts
b)
12 volts
44.
A 15 volt battery supplies voltage to 3 bulbs. How much voltage would each bulb get?
a)
15 volts
b)
5 volts
45.
A 8 volt battery supplies voltage to 4 bulbs. How much voltage would each bulb get?
a)
8 volts
b)
2 volts
46.
What 'flows' in a wire?
a)
Protons
b)
Neutrons
c)
Atoms
d)
Electrons

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