WorksheetsCurrent Resistance Ohm's Law
Total questions: 20
Worksheet time: 42mins
Name
Class
Date
1.
What size resistor would produce a 3 Amp current flow with a 12 Volt battery
a)
1 Ohm
b)
3 Ohms
c)
4 Ohms
d)
12 Ohms
2.
What is current measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
3.
What is Resistance?
a)
The flow of electrons
b)
Electric potential difference
c)
A battery
d)
The ability to reduce the flow of electrons
4.
Electricity that flows in a closed path is called a
a)
path
b)
current
c)
circuit
d)
light
5.
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
6.
The mathematical relationship among Voltage, Current, and Resistance
a)
Faraday's Law
b)
Tesla's Law
c)
Edison's Law
d)
Ohm's Law
7.
Current times Resistance equals
(I X R)
(I X R)
a)
Power
b)
Voltage
c)
Amperage
d)
Ohm
8.
Voltage divided by Resistance
(V / R)
a)
Current
b)
Power
c)
Ohms
d)
Watts
9.
Voltage divided by Current
(V / I)
a)
Current
b)
Power
c)
Resistance
d)
Watts
10.
If the Voltage is increased and the resistance stays the same, Current will
a)
Increase
b)
Decrease
c)
Stay the same
d)
X
11.
If the Voltage stays the same and Resistance is increased, Current will
a)
Increase
b)
Decrease
c)
Stay the same
d)
X
12.
What voltage is needed to cause a 5A current flow through a 2Ω resistor?
a)
10V
b)
2.5V
c)
7V
d)
0.4V
13.
What resistance is needed to cause a 50A current flow because of a 500V battery?
a)
10Ώ
b)
5Ώ
c)
2500Ώ
d)
550Ώ
14.
If the battery produced 12.6 Volts and what would be the current flow be for a 6 Ohm resistor
a)
2.1 Amps
b)
2.4 Amps
c)
1.71 Amps
d)
15 Amps
15.
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.
16.
This circuit has a 24 volt battery and the resistor is 8 ohms. How many amps are running through the circuit?
a)
3 Amps
b)
192 Amps
c)
2 Amps
d)
4 Amps
17.
What is this symbol?
a)
resistor
b)
switch
c)
battery
d)
bulb
18.
If you decreases the resistance of a circuit, what happens?
a)
Current decreases
b)
Current increases
c)
Electrons disappear
d)
Bulbs get brighter
19.
If resistivity of iron is 1.6*10^(-8), how much is the resistance of a wound wire resistor made by a wire 1m long and area 1mm^2?
a)
1.6*10^(-2)
b)
1.6*10^(-14)
c)
1.6*10^(-8)
20.
if the resistivity of copper is 1.7*10^(-8), how much is its conductivity?
a)
0.6*10^8
b)
0.6*10^-8
c)
1.7*10(-8)
100 %
