WorksheetsVoltage, Current, Resistance
Total questions: 20
Worksheet time: 25mins
Name
Class
Date
1.
How do you calculate voltage?
a)
Current X Resistance
b)
Resistance ÷ Current
c)
Current ÷ Resistance
d)
Measure it with a ruler
2.
How do you calculate resistance?
a)
Voltage X Current
b)
Current ÷ Voltage
c)
Voltage ÷ Current
d)
Current X Amps
3.
What voltage is needed to cause a 2A current flow through a 10Ω resistor?
a)
5V
b)
0.2V
c)
20V
d)
200V
4.
What is current measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
5.
What is resistance measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
6.
What is the current in a circuit with 6 ohms of resistance and a battery containing 24 Volts?
a)
1/4 A
b)
144 A
c)
4 A
d)
0.4 A
7.
What is the resistance of a lightbulb that experiences 9 Volts and 3 amps of current?
a)
1/3 ohms
b)
3 ohms
c)
27 ohms
d)
9 ohms
8.
What resistance is needed to cause a 50A current flow because of a 500V battery?
a)
10Ώ
b)
5Ώ
c)
2500Ώ
d)
550Ώ
9.
As the resistance in a circuit increases, the electric current __________.
a)
increases
b)
decreases
c)
stays the same
10.
What is voltage measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
11.
What voltage is needed to cause a 5A current flow through a 2Ω resistor?
a)
10V
b)
2.5V
c)
7V
d)
0.4V
12.
What is the Voltage of a circuit that has a resistance of 5 Ω and a current of 2 A?
a)
25 V
b)
10 V
c)
2.5 V
d)
0.4 V
13.
Identify the conductor below.
a)
cloth rag
b)
plastic bottle
c)
gold ring
14.
Identify the insulator below.
a)
aluminum foil
b)
paperclip
c)
rubber eraser
15.
As the resistance in a circuit increases, the electric current __________.
a)
increases
b)
decreases
c)
stays the same
16.
Electricity is the flow of _________.
a)
protons
b)
neutrons
c)
electrons
17.
What would happen if in a circuit the voltage is increase?
a)
The time would increase
b)
The current would increase
c)
The current would decrease
d)
The current would stay the same
18.
If there is a current of 2A and a resistance of 24 ohms, what voltage will there be?
a)
26 V
b)
48 V
c)
12 V
d)
22 V
19.
If the voltage is increased and the resistance stays the same, what will current do?
a)
Increase
b)
Decrease
c)
Stay the same
d)
X
20.
An alarm clock draws 0.5 A of current when connected to a 120 volt circuit. Calculate its resistance.
a)
60Ω
b)
120Ω
c)
180Ω
d)
240Ω
100 %
