Electricity Test

Question 1

What is resistance/ohm

Answer 1

How hard it is for an electron to travel through something

Question 2

What is a parallel circuit

Answer 2

It’s a circuit with more than one path way for electrons to travel through

Question 3

What is a series circuit

Answer 3

A circuit with only one pathway for electrons to pass through

Question 4

Parts of the dry battery

Answer 4

Positive/negative terminal, electrolyte/ moist paste, carbon rod.

Question 5

Unit for measuring current

Answer 5

Amp/ampere

Question 6

Unit of measuring large amount of energy

Answer 6

Kilowatt hour

Question 7

How does something become staticky charged

Answer 7

Friction

Question 8

What is grounding

Answer 8

When you stick an object in the ground and allow electrons to flow through

Question 9

How is static charge different from current electricity

Answer 9

Static charge builds up and the current electricity goes through

Question 10

When you are measuring current what are you actually measuring

Answer 10

The amount of electrons running through a wire each second

Question 11

What is ohms law

Answer 11

V=I x R. I = V / R. R = V / I,

Question 12

What is the unit for measuring small amounts of energy

Answer 12

Joule

Question 13

What does voltage mean

Answer 13

Amount of energy carries per electron

Question 14

How does something become positively charged

Answer 14

It loses electrons

Question 15

How does something become negatively charged

Answer 15

Gains electrons

Question 16

What two things effect how strongly two negative/positive charges repel each other

Answer 16

How strongly charges they are and how close together they are

Question 17

Why do neutral objects attract both negative and positive

Answer 17

It temporarily because oppositely charges then the charges object

Question 18

How should a voltmeter be connected into a circuit in order to measure the voltage used by the light

Answer 18

Wire before and after the light bulb

Question 19

What is the unit for power

Answer 19

Watt

Question 20

What does a bolt meter measure

Answer 20

Different in voltage between two place in a circuit

Question 21

Why is the current the same In all parts of a series circuit

Answer 21

Because there’s only one pathway for the electrons to travel through

Question 22

Why can a current be different in different Parts of a parallel circuit

Answer 22

It has multiple paths

Question 23

In a parallel circuit how does the current coming out of the battery compare to the current travelling through the different pathway

Answer 23

There the same

Question 24

Why do bugger wire have less resistance

Answer 24

Because there’s more space for the electrons

Question 25

Why are light bulbs brighter in a parallel circuit compared to a series circuit

Answer 25

In a series light bulb share the energy and in a parallel each bulb gets the full voltage of the battery

Question 26

What does adding a light bulb into the series do to the current

Answer 26

It decreases the current

Question 27

What does adding a light bulb to a parallel circuit do to the current

Answer 27

It increases the current

Question 28

What is a scientist talking about when the are talking about power

Answer 28

How fast something is using energy

Question 29

What does increases the voltage do to the light bulb in a circuit

Answer 29

It makes in brighter

Question 30

Pros and cons of series

Answer 30

Adv, Simple and cheap
Dis, if a bit breaks it all break, total resistance is higher

Question 31

Pros and cons for parallel

Answer 31

Adv equal voltage, can disconnect easily.
Dis, more wiring and drains quicker.