Science, Electricity

Question 1

Resistance / Voltage / Current triangle

Answer 1

     /\
/ V \
/ I | R \

Question 2

Resistance equation

Answer 2

R = V / I

Question 3

Voltage equation

Answer 3

V = R x I

Question 4

Current equation

Answer 4

I = V / R

Question 5

Voltage keywords and symbols

Answer 5

Voltage = V = Volts

Question 6

Current keywords and symbols

Answer 6

Current = A = Amps

Question 7

Loops in a series circuit?

Answer 7

One

Question 8

Loops in a parallel circuit?

Answer 8

More than one

Question 9

Definition of electricity?

Answer 9

Electricity is the flow of electrically charged particles around a circuit.

Question 10

What are conductors?

Answer 10

Materials that allow electricity to flow through them

Question 11

What are insulators?

Answer 11

Materials that do not allow electricity to flow through them

Question 12

Current in a series circuit?

Answer 12

The current is the same everywhere in a series circuit, even if it has a lot of bulbs or other components

Question 13

Current in a parallel circuit?

Answer 13

When two components are connected in parallel, the current is shared between the components. The current is shared when it reaches the branches, then adds again where the branches meet.

Question 14

Voltage in a series circuit?

Answer 14

The supply voltage is shared between components in a series circuit, so the sum of the voltages across all of the components in a series circuit is equal to the supply voltage.

Question 15

Voltage in a parallel circuit?

Answer 15

The supply voltage is the same with all components in a parallel circuit, so the voltages of all of the components in a parallel circuit is equal to the supply voltage.

Question 16

What happens if you unscrew a light bulb in a circuit?

Answer 16

This would create a gap in the circuit, meaning it would no longer work.

Question 17

What happens if you add or deacrese the number of bulbs in a circuit?

Answer 17

If more bulbs are added, the other bulbs would dim. If the number of bulbs were decreased, the other bulbs would brighten.

Question 18

How do you measure potential difference on a cell?

Answer 18

Put a Voltmeter in parallel to the bulb.

Question 19

How do you measure current?

Answer 19

Put an ammeter in the main circuit.

Question 20

If a cell let out 12V and splits into 3 parallel circuits each with 2 bulbs, what would the potential difference of one of the bulbs be?

Answer 20

6V (each parallel circuit has 12V, and that is split between the two bulbs in each circuit).

Question 21

A circuit measures 3A after the cell. The circuit splits into 3 seperate parallel circuits, each with two bulbs. What would the amps be measured after the second set of bulbs (before the circuits connect again).

Answer 21

Each parellel circuit would have 3 / 3 amps, so 1 amp. That stays the same no matter the number of bulbs.

Question 22

Describe a bulb symbol

Answer 22

A circle with a cross in it

Question 23

Describe a wire symbol

Answer 23

a straight line

Question 24

Describe a ammeter symbol

Answer 24

A circle with an “A” in it

Question 25

Describe a voltmeter symbol

Answer 25

A circle with a “V” in it

Question 26

Describe a resistor symbol

Answer 26

A rectangle

Question 27

Describe a variable resistor symbol

Answer 27

A rectangle with an arrow through it

Question 28

Describe a cell symbol

Answer 28

A tall vertical line followed by a short vertical line. Connect multiple to create a battery.

Question 29

Where is the cell on a diagram?

Answer 29

On the top

Question 30

Where are the bulbs on a diagram?

Answer 30

The bottom

Question 31

Describe a switch symbol

Answer 31

A diagonal line, not connecting to the wire if open, or a horizontal line connecting the wire if closed.

Question 32

What is resistance measured in?

Answer 32

Resistance-Ω-Ohms

Question 33

How many Ωs are 1 kΩ?

Answer 33

1000Ω

Question 34

How many As are 1 kA?

Answer 34

1000A

Question 35

How many mAs are 1 A?

Answer 35

1000mA

Question 36

How many mV are 1 V?

Answer 36

1000mV