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WorksheetsCoulomb's law, Voltage, current and Power
Total questions: 18
Worksheet time: 18mins
Name
Class
Date
1.
Voltage is measured in __.
a)
volts.
b)
watts.
c)
coulombs.
2.
The movement of electrons from atom to atom in a line results in a flow of _____.
a)
amperage.
b)
electric current.
c)
electromagnetic connectors.
3.
Current has units:
a)
Volt
b)
ampere
c)
coulomb
4.
What 'flows' in a wire?
a)
Protons
b)
Neutrons
c)
Atoms
d)
Electrons
5.
Which statement is true?
a)
The light bulb will light up because the circuit is complete.
b)
The light bulb will light up because the circuit is broken.
c)
The light bulb will not light up because the circuit is open.
6.
brass is a _____?
a)
insulator
b)
conductor
7.
What variable is a Coulomb the unit for?
a)
Charge
b)
Force
c)
Distance
d)
Mass
8.
Electrostatic force F is directly proportional to:
a)
r^2 (distance squared)
b)
q1
c)
both q1 and q2
9.
A material in which electrons are not able to move easily
a)
Circuit
b)
Insulator
c)
Resistance
d)
Conductor
10.
The plastic covering is there to:
a)
Provide a conductor for electrical energy to flow.
b)
Provide an insulator so that electrical energy will not pass outside of the wires.
c)
Provide a conductor so that electrical energy can NOT flow.
d)
Provide an insulator so that electrical energy can flow.
11.
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
12.
How do electrons differ from protons?
a)
They are the same thing
b)
Electrons hold a negative charge and protons hold a positive charge.
c)
Electrons are positively charged and protons are negatively charged.
d)
Protons are neutral
13.
The Electric Force is strongest when charges are...
a)
close together
b)
far apart
c)
the electric force is constant everywhere
14.
Which is the value of the constant in Coulomb's equation?
a)
k = 9·10-9
b)
k = 9.8
c)
k = 6.67·10-11
d)
k = 9 ·109
15.
Electrical Power is measured in what?
a)
Watts
b)
Amps
c)
Volts
16.
What is the equation for Electrical Power?
a)
P=I÷V
b)
P=V÷I
c)
P=I×V
17.
What is the work done by a charge?
a)
W=q×V
b)
W=V÷q
c)
W= q÷V
18.
What is the charge of an electron
a)
1.602 x 10-19 C
b)
1.602 x 1019 C
c)
9.0 x 109 Nm2/c2
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