Cover year 9 Set 1 Monday

• Physics
• Lower Secondary (Key Stage 3)

How does current flow through series and parallel circuits?

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How does current flow through series and parallel circuits?

Series circuits provides the current with

1. multiple pathways
2. one pathway
3. two pathways
4. five pathways

Parallel circuits provides the current with

1. multiple pathways
2. one pathway
3. two pathways
4. five pathways

Describe the path that current flows in
inside a series circuit.

How does a series circuit differ from a parallel circuit in terms of pathway for current to flow?

I take an ammeter reading in a series circuit, then move the ammeter in the circuit and take another reading.
Describe what will happen to the reading on the ammeter, then explain why.

On the next slide 

On the next slide read carefully the ammeter readings and amount of cells in a circuit. 

Note the answers down in the back of your books, click onto the next slide and type in your answers.

What were the missing current readings - include the circuit number in each answer.

What is the unit of electric current?

1. Ohm
2. Watt
3. Ampere
4. Volt

Which instrument is used to measure electric current?

1. Voltmeter
2. Ammeter
3. Multimeter
4. Ohmmeter

What is the symbol for electric current?

1. R
2. I
3. P
4. V

In one paragraph write down everything you know about parallel circuits and series circuits.

Link the symbol to the electric component

Describe why the current is 0 A

Describe why the current is 0A in the last slide

State and explain the readings on the 4 ammeters.

State and explain the readings on the 4 ammeters. From the previous slide.

Compare and contrast the circuits and ammeter readings from the last slide.

What happens to the total voltage in a series circuit when more batteries are added?

1. It decreases
2. It increases
3. It becomes unstable
4. It stays the same

In a series circuit, what happens to the brightness of bulbs if more bulbs are added?

1. It becomes brighter
2. It increases
3. It decreases
4. It stays the same

Use the diagram to explain resistance.

Explain the word resistance (in terms of physics, using the diagram from the last slide to help).

How does the resistance of a wire change with an increase in length?

1. Increases
2. Remains constant
3. Decreases
4. No effect

What happens to the resistance of a wire when the temperature increases?

1. Decreases
2. Remains constant
3. No effect
4. Increases

Which material would generally have the highest resistance?

1. Copper
2. Nichrome
3. Aluminum
4. Silver

What is the unit of resistance?

1. Watt
2. Volt
3. Ampere
4. Ohm

What is the unit of measurement for resistance?

1. Ohm
2. Ampere
3. Volt
4. Watt

What material is commonly used for making resistors?

1. Copper
2. Aluminum
3. Silver
4. Carbon

Which of the following increases resistance in a conductor?

1. Decreasing temperature
2. Increasing conductivity
3. Increasing length
4. Decreasing cross-sectional area

What happens to resistance in a conductor as temperature increases?

1. It increases
2. It decreases
3. It fluctuates
4. It remains constant

Summarise all the scientific facts and knowledge from today's lesson.