Current

Question 1

What is “current?”

Answer 1

• Current is the flow of charge.

Question 2

How do electrons move in a circuit?
Conventional current

Answer 2

• From positive to negative.

Question 3

How is current measured?

Answer 3

• The number of electrons that pass a fixed point each second/ rate of flow of charge.

Question 4

Where are the electons found in a circuit?

Answer 4

• They are found in the wires of metal
  Delocalised electrons

Question 5

What is the equation that links charge, time and current?

Answer 5

• Q=IT
  Charge = Current x time

Question 6

What 2 parts of a circuit have electrons in them?

Answer 6

• Metal Components
• Metal wires

Question 7

What is meant by “rate?”

Answer 7

• Per unit time

Question 8

What are the 3 types of ammeters?

Answer 8

• Analog
• Digital
• Multimeters

Question 9

What are multimeters?

Answer 9

• Multimeters are electrical measuring devices that can act as ammeter/ voltmeter.

Question 10

Describe the current in a series circuit.

Answer 10

• Current is the same all around series circuit.

Question 11

Describe the current in parallel circuit?

Answer 11

• Current is split between branches/ electrons split.
• Not always excatly half*

Question 12

What is the advantage of using parallel circuits in christmas lights?

Answer 12

• If one bulb breaks, it doesn’t cut off all of circuit.

Question 13

What does the cell do in a circuit?

Answer 13

• It provides the potential difference for the circuit.

Question 14

What is another way of writing 1A?

Answer 14

1C/s