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Electricity & Ohm's Law

Total questions: 15

Worksheet time: 41mins

Name
Class
Date
1.

A negatively charged particle ____________________

a)

possesses more protons than electrons

b)

possesses more electrons than protons

c)

has equal numbers of protons and electrons

2.

The circuit shown on the picture above is an example of a /an _______

a)

Closed Circuit

b)

Open Circuit

3.
A flow of electrons through a conductor is called:
a)
A river
b)
A spark
c)
An electron flow
d)
A current
4.
To complete a circuit the switch must be
a)
unattached
b)
open
c)
closed
5.

The measure of electrical resistance

a)

watt

b)

ohm

c)

volt

d)

ampere

6.

The unit for electric current

a)

watt

b)

ohm

c)

volt

d)

ampere

7.
If the Voltage is increased and the resistance stays the same, Current will
a)
Increase
b)
Decrease
c)
Stay the same
d)
X
8.
How do you calculate current
a)
Resistance X Voltage
b)
Voltage X Resistance
c)
Resistance ÷ Voltage
d)
Voltage ÷ Resistance
9.
What voltage is needed to cause a 2A current flow through a 10Ω resistor?
a)
5V
b)
0.2V
c)
20V
d)
200V
10.
With the engine running the charging system produces 14.5 Volts what would the current flow be if a resistance of 6 Ohms was present
a)
2.41 Ohms
b)
2.52 Ohms
c)
2.1 Ohms
d)
0.3333 Ohms
11.
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
12.

What is the (hot) resistance of the bulb?

a)

100 ohm

b)

132 ohm

c)

0.01 ohm

d)

0.007 ohm

13.

Based on the graph, which of the following would be true regarding the relationship of voltage and current?

a)

As voltage increases, current decreases.

b)

Voltage will not affect current.

c)

As voltage decreases, current increases.

d)

As voltage increases, current also increases.

14.

If Vps is set to 8V and Rv is 1MΩ, and Vi is measured at 1mV. Calculate the internal resistance of the oscilloscope

a)

0.125KΩ

b)

0.125Ω

c)

8KΩ

d)

8Ω

15.

Without considering the LED light, how many more volts will you need to increase the current to 0.05A?

a)

11V

b)

8V

c)

24V

d)

18V