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Worksheets

Electricity and Magnetism

Total questions: 20

Worksheet time: 12mins

Name
Class
Date
1.

______ is the potential energy per unit of positive charge

a)

Resistor

b)

Current

c)

Electric Potential

d)

Potential Difference

2.

_______ is any wire in a circuit which causes a decrease in the flow of current due to its diameter or material.

a)

Resistor

b)

Current

c)

Resistance

d)

Multimeter

3.

_____is the unit of measure for the magnitude of a magnetic field

a)

Tesla

b)

Current

c)

Resistance

d)

Ohm's Law

4.

____is the amount of charge that passes a given point in a specified period of time, measured in amperes.

a)

Resistor

b)

Current

c)

Ohm's Law

d)

Potential Difference

5.

____is the decrease in the flow of electrons and current due to a change in the diameter of material of a wire. It is measured in Ohms.

a)

Resistor

b)

Electric Potential

c)

Current

d)

Resistance

6.

______ is an instrument used to measure current, voltage, and resistance.

a)

Multi meter

b)

Ohm's Law

c)

Resistor

d)

Current

7.

_____is the ratio of voltage to current is resistance and is represented by the equation R=V/I.

a)

Mrs. Pulaski's Law

b)

Multi-meter

c)

Ohm's Law

d)

Potential Difference

8.

____ is the difference in electrical potential between point A and point B. In a circuit, Point A and point B represent the positive and negative terminals of a power source such as a battery.

a)

Resistor

b)

Tesla

c)

Electric Potential

d)

Potential Difference

9.

Ohm's Law R =

a)

Resistance

b)

Current

c)

Voltage

10.

Ohm's Law V=

a)

Resistance

b)

Current

c)

Voltage

11.

Ohm's Law I =

a)

Resistance

b)

Current

c)

Voltage

12.

As voltage in a current increases, current increases but the resistance to the flow ______________

a)

increases

b)

decreases

c)

remains constant

13.

Increasing the length of a resistor increases the amount of resistance and _________ current.

a)

increases

b)

decreases

c)

remains constant

14.

Increasing the cross-sectional area of a resistor decreases the amount of resistance and ________ current

a)

increases

b)

decreases

c)

remains constant

15.

The strength of an electromagnet is affected by the number of turn of a wire in the coil over a specific length and by the amount of _________ flowing through the wire.

a)

Resistance

b)

Current

c)

Coil

16.

An electrical circuit has a current of 5 amps and a resistance of 10 ohms. What is the voltage of this circuit?

a)

15 Volts

b)

5 Volts

c)

30 Volts

d)

50 Volts

17.

As the number of batteries in a circuit increase, the total voltage of the circuit also increases.

a)

True

b)

False

18.

Increasing the amount of resistance in a circuit decreases the total voltage of the circuit.

a)

True

b)

False

19.

The strength of an electromagnet depends on the voltage produced by the power source and the _________

a)

Type of resistor used

b)

Number of times the wire is coiled

c)

Type of battery used

20.

A circuit has a resistor with a length of 8mm. They replace the 8mm resistor with a length of 16mm resistor and the same cross sectional area as the original resistor. What will happen to the current and the resistance in the circuit?

a)

Current will increase and resistance decrease

b)

Current will decrease and resistance will increase

c)

Current will be constant and resistance will decrease