Quiz about ELECTRICITY AND MAGNETISM

Question 1

What is a wire in a circuit wrapped around an iron core called?

Accepted Answer

electromagnet

Answer

generator

Answer

electric motor

Question 2

If a light bulb is added to a circuit and it turns on, what can we say about this circuit?

Accepted Answer

unbroken

Answer

open

Answer

incomplete

Answer

off

Question 3

What energy transformation takes place in a battery powered fan that is spinning?

Accepted Answer

chemical to electrical to kinetic

Answer

kinetic to chemical to electrical

Answer

chemical to kinetic

Answer

electrical to kinetic to chemical

Question 4

What are huge wheels that rotate when pushed by water, wind, or steam?

Accepted Answer

turbines

Answer

magnet wheels

Answer

batteries

Answer

generators

Question 5

What is the region of force around a magnet known as?

Accepted Answer

magnetic field

Answer

magnetic pole

Answer

magnetic domain

Answer

lodestone

Question 6

If two atoms, each with a different charge (+ and -), were brought near each other, they would....

Accepted Answer

attract each other

Answer

repel each other

Answer

create static discharge

Answer

have on effect on each other

Question 7

Walking across a carpet is a perfect example of charge being transferred by...

Accepted Answer

friction

Answer

contact

Answer

induction

Answer

static electricity

Question 8

If a neutral metal comb is held near an object with a negative charge, the comb will become charged by....

Accepted Answer

induction

Answer

static discharge

Answer

contact

Answer

friction

Question 9

What type of current is produced by a battery?

Accepted Answer

direct current

Answer

parallel current

Answer

alternating current

Answer

potential current

Question 10

In which of the following materials do charges to flow more easily?

Accepted Answer

metal wires

Answer

glass

Answer

wool

Answer

rubber mats

Question 11

The current in a hair dryer measures 15.0 Amps. The resistance of the appliance is 8.0 ohms. What is the voltage?

Accepted Answer

120 V

Answer

0.5 V

Answer

7.0 V

Answer

1800 V

Question 12

Which of the following statements describes the interaction between magnetic poles?

Accepted Answer

Like poles repel each other, and opposite poles attract each other.

Answer

Like poles attract each other.

Answer

Opposite poles repel each other.

Answer

Like poles attract each other, and opposite poles repel each other.

Question 13

If you break a bar magnet in half, each half...

Accepted Answer

becomes a bar magnet with two poles.

Answer

contains one magnetic pole.

Answer

becomes unmagnetized.

Answer

is only temporarily magnetized.

Question 14

What creates a magnetic field?

Accepted Answer

moving electric charges

Answer

charged particles that do not move

Answer

gravity

Answer

an isolated magnetic pole

Question 15

How are fossil fuels used to generate electrical energy?

Accepted Answer

Heat from burning fuel creates steam that spins a turbine.

Answer

Heat from burning fuel spins magnets inside an electric motor.

Answer

Heat from burning fuel causes an electric motor to produce a current.

Answer

Heat from burning fuel creates steam that turns a transformer.

Question 16

A temporary magnet that only works when electricity is passed through wires surrounding an iron core is called:

Accepted Answer

electromagnet

Answer

galvanometer

Answer

induction

Answer

super conductor magnet

Question 17

Which force is so low that it causes the man to slip and fall?

Accepted Answer

Friction

Answer

Gravity

Answer

Magnetism

Answer

Motion

Question 18

Electricity is the flow of _________.

Accepted Answer

Electrons

Answer

Protons

Answer

Neutrons

Answer

Atoms

Question 19

Pick the correct sentence.

Accepted Answer

This circuit will not work because there is no energy source.

Answer

This circuit will work because it is a closed circuit.

Answer

Energy will freely flow in this circuit.

Answer

This circuit will not work because there is no switch.

Question 20

To complete a circuit the switch must be

Accepted Answer

closed

Answer

unattached

Answer

open

Question 21

In which of the following circuits will all of the remaining light bulbs go out if bulb 3 burns out?

Accepted Answer

Option B is correct

Answer

A.

Answer

C.

Answer

D.

Question 22

Irene bought a new house and has decided to rewire it. She wants to be able to turn

some lights off and have the others remain lit. What type of circuits should she use and

why?

Accepted Answer

She should use parallel circuits because when one light turns off, the other lights remain lit.

Answer

She should use series circuits because when one light turns off, the other lights remain lit.

Answer

She should use parallel circuits because when one light turns off, the others turn off, too.

Answer

She should use series circuits because when one light turns off, the others turn off, too.

Question 23

Which circuit will not light the bulb?

Accepted Answer

Option C is correct

Answer

A.

Answer

B.

Answer

D.

Question 24

What is the name of a path that has only one way for the current to flow?

Accepted Answer

series circuit

Answer

current electricity

Answer

static electricity

Answer

battery

Question 25

Why is current electricity more useful than static electricity?

Accepted Answer

because you can control current electricity

Answer

because current electricity is safer

Answer

because you can switch off current electricity

Answer

because it's faster than static electricity

Question 26

What is the unit of measurement for resistance?

Accepted Answer

Ohms

Answer

Voltage

Answer

Ampere

Answer

Watts

Question 27

Which resistor will prevent the most current flow?

Accepted Answer

1000 ohms

Answer

1 ohm

Answer

100 ohms

Answer

0.5k ohms

Question 28

What size resistor would produce a 3 Amp current flow with a 12 Volt battery

Accepted Answer

4 Ohms

Answer

1 Ohm

Answer

3 Ohms

Answer

12 Ohms

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