Topic 2 -Electricity

Question 1

What is electric current?

Answer 1

The flow of electric charge

Question 2

What is the unit, name and shorthand, for current?

Answer 2

Amps, A

Question 3

What is a single-looped circuit called?

Answer 3

Series

Question 4

What is a circuit with multiple loops called?

Answer 4

Parallel

Question 5

What is the correct name for voltage?

Answer 5

Potential difference

Question 6

What is the unit, name and shorthand, for potential difference?

Answer 6

Volts, V

Question 7

What is resistance?

Answer 7

Something that slows down the flow of the current

Question 8

What is the unit, name and shorthand, for resistance?

Answer 8

Ohms, ♎️

Question 9

What is charge?

Answer 9

The amount of current over a period of time

Question 10

Charge =

Answer 10

Current x Time

Question 11

What is the unit, name and symbol, for charge?

Answer 11

Coulombs, C

Question 12

What does the symbol for a cell look like?

Answer 12

A long thin line follow by a short thick line, both perpendicular to the wire line

Question 13

What does the symbol for a battery look like?

Answer 13

Multiple cells

Question 14

What does the symbol for a switch look like?

Answer 14

The wire is interrupted by two small circles, which are connected by a line. If the line completely connects them, the switch is closed. If the online only touches one, the switch is open.

Question 15

What does the symbol for a bulb look like?

Answer 15

A circle with an X inside that touches the circumference

Question 16

What does the symbol for a fuse look like?

Answer 16

A rectangle that the wire line continues through

Question 17

What does the symbol for LED look like?

Answer 17

A circle containing a ‘play button’ type triangle that points towards a line perpendicular to wire. Around this is a circle with two arrows pointing out of it.

Question 18

What does the symbol for a resistor look like?

Answer 18

A rectangle that interrupts the wire

Question 19

What does the symbol for a variable resistor look like?

Answer 19

A rectangle with an arrow pointing NE going through it

Question 20

What does the symbol for an ammeter look like?

Answer 20

A circle containing an A

Question 21

What does the symbol for a voltmeter look like?

Answer 21

A circle containing a V

Question 22

What does the symbol for a diode look like?

Answer 22

A circle containing a ‘play button’ type triangle that points towards a line perpendicular to wire. Around this is a circle.

Question 23

What does the symbol for a light dependent resistor look like?

Answer 23

A rectangle in a circle, with two arrows on the outside pointing in.

Question 24

What does the symbol for a thermistor look like?

Answer 24

A rectangle with a backwards, slanted L going through it

Question 25

Resistance =

Answer 25

Voltage/Current

Question 26

What is the symbol for coulombs?

Answer 26

Q

Question 27

What is the symbol for current?

Answer 27

I

Question 28

What is the symbol for potential difference?

Answer 28

V

Question 29

What is the symbol for resistance?

Answer 29

R

Question 30

What is the name of a component that maintains the same resistance (given a constant temperature) even when the current changes?

Answer 30

Ohmic conductors

Question 31

Why do ohmic conductors maintain the same resistance when the current changes?

Answer 31

The current and potential difference are directly proportional

Question 32

What does a rise in temperature do to resistance?

Answer 32

Increases it

Question 33

What does the light dependent resistor do?

Answer 33

Increases resistance when it has less light

Question 34

What does the thermistor do?

Answer 34

Increase resistance when it has less heat

Question 35

What is a sensing circuit?

Answer 35

A circuit that turns on or increases power for its key components depending on it’s conditions and surroundings.

Question 36

What happens to the voltage of components in a series circuit?

Answer 36

It is shared

Question 37

What happens to the voltage of the components in a parallel circuit?

Answer 37

Same voltage goes to each loop

Question 38

What happens to the current in a series circuit?

Answer 38

It is the same all the way around

Question 39

What happens to the current in a parallel circuit?

Answer 39

It is shared between loops

Question 40

Page

Answer 40

28