Electricity⚡️

Question 1

Define ‘electric current’

Answer 1

Flow of electrons

Question 2

Circuits:
* Adjust the slider of the variable resistor.
What happens to the brightness of the bulb and the number on the ammeter?

Answer 2

• Brightness dims
  *Number on the ammeter decreases

Question 3

What’s the equation for current?

Answer 3

charge(C)
current (A)= ————
time (S)

Question 4

What is the equation for Resistance?

Answer 4

Voltage (V)
Resistance (cc legs)= ————
Current (A)

Question 5

What is a resistor?
What’s it’s symbol?
What is it measured in?

Answer 5

•A resistor is a component that resists current flowing.
•Symbol= R
•Measured in: ohms (charlie chaplin legs)

Question 6

Complete the sentence below, inserting either ‘increases/decreases’.

As the resistance in a circuit _______, the current flowing ________.

Answer 6

Increases, Decreases

Question 7

What holes out of 1,2,3 (in a multimeter) are used when using an ammeter.

1 •
2 •
3 •

Answer 7

1 •
2
3 •

Question 8

What holes out of 1,2,3 (in a multimeter) are used when using a voltmeter?

1 •
2 •
3 •

Answer 8

1
2 •
3 •

Question 9

• As the length of wire increases, the resistance increases
• As the length of wire doubles, the resistance doubles
Using this information, complete the sentence below.
Increasing the length of wire is _____ _______ to the resistance.

Answer 9

Directly proportional

Question 10

What is charge measured in?

Answer 10

coulombs (c)

Question 11

How is current measured?

Answer 11

using an ammeter

Question 12

What is the equation for potential difference?

Answer 12

Energy
Potential difference= ———-
Charge

Question 13

What happens to the current and voltage in series circuits?

Answer 13

In a series circuit, the current stays the same, but the voltage is divided between the components.

Question 14

What happens to the current and voltage in a parallel circuit?

Answer 14

In a parallel circuit, the voltage stays the same, but the current is divided between the branches.