Electricity and Electromagnetism

Question 1

Are Protons positively charged, negatively charged or Neutral?

Answer 1

Positive.

Question 2

Are Electrons positively charged, negatively charged or Neutral?

Answer 2

Negative.

Question 3

Are Neutrons positively charged, negatively charged or Neutral?

Answer 3

Neutral.

Question 4

What happens if two charged objects are similar?

Answer 4

They repel.

Question 5

What happens if the charged objects are opposite?

Answer 5

They attract.

Question 6

True or False?

Negatively Charged objects have more electrons than protons?

Answer 6

True.

Question 7

In a Electrostatic chart, the top has a __________ hold on Electrons and the bottom has a __________ on Electrons.

Answer 7

Negative (Weak)

Positive (Strong)

Question 8

What is Ohm’s Law?

Answer 8

V= I x R

Question 9

What is Potential Difference?

Answer 9

Voltage.

Question 10

What is Current intensity measured in?

Answer 10

Amps.

Question 11

What is Resistance measured in?

Answer 11

Ohms.

Question 12

What is the function of a Power Source/Battery?

Answer 12

Power Supply.

Question 13

What is the function of Wires?

Answer 13

Conduction.

Question 14

What is the function of a Lightbulb/Motor?

Answer 14

Energy Transformation.

Question 15

What is the function of a Switch?

Answer 15

Control.

Question 16

What is the function of a Resistor?

Answer 16

Opposes the flow of electrical current.

Question 17

What is the function of a Fuse?

Answer 17

Protection.

Question 18

What is the function of an Ammeter?

Answer 18

Measures the current flowing through a circuit.

Question 19

What is the function of a Voltmeter?

Answer 19

Measures the voltage flowing through the circuit.

Question 20

How is an ammeter connected within a circuit?

Answer 20

It’s placed within the circuit.

Question 21

How is a voltmeter connected in a circuit?

Answer 21

It’s placed outside of the circuit.

Question 22

What is a difference between a series circuit and parallel circuit?

Answer 22

A series circuit only has one path, while a parallel has more than one.

Question 23

If a switch is closed, what happens?

Answer 23

Electrons flow through the circuit.

Question 24

If a switch is open, what happens?

Answer 24

The flow of electrons is interrupted, and electricity will not happen.

Question 25

What is the formula for electrical power?

Answer 25

P= V x I

Question 26

What is electrical power measured in?

Answer 26

Watts (W) or kilowatt (kW)

Question 27

1000 watts= ___ kW

Answer 27

1.

Question 28

What is the formula for Electrical Energy?

Answer 28

E= P x T

Question 29

What is Electrical Energy measured in?

Answer 29

Joules (J) or kilowatt hour (kWh).

Question 30

What is time measured in?

Answer 30

Seconds (s) or Hours (h).

Question 31

Every Magnet has two Poles: _______ and ______.

Answer 31

North South

Question 32

Like Poles: ____

Answer 32

Repel.

Question 33

Unlike Poles: ____

Answer 33

Attract.

Question 34

What is the direction that a magnetic field always going to have?

Answer 34

North to South.

Question 35

What is the first left hand rule?

Answer 35

If the wire is going from negative to positive, the direction of the compass will be up. If the wire is going from positive to negative, the direction of the compass will be down.

Question 36

How do you increase the intensity of a magnetic field of a live wire?

Answer 36

Increase the current. Use a better conductor.

Question 37

How do you increase the intensity of a magnetic field of a solenoid?

Answer 37

Increase the current Use a better conductor Increase the number of loops

Question 38

In a circuit, the power source features a big line and a small line. What does the big line represent and what does the small line represent?

Answer 38

Big= Positive Small= Negative