Electrical resistance

In this lesson we will explore the concept of electrical resistance. We will also learn about factors that will affect the current in a series circuit and we will learn how to use the equation V=IR.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.What is the unit of measure of potential difference?

1/6

Q2.Which of these definitions best describes potential difference?

2/6

Q3.Which of these statements best describes the size of an electrical current?

3/6

Q4.Which of these descriptions best describes how to measure the potential difference across a resistor?

4/6

Q5.If a charge of 25 C flows through a lamp and delivers 12 J of energy. What is the potential difference across the lamp?

5/6

Q6.A 3 V cell is used to transfer 15 mJ of energy to a resistor. How much charge must flow through the resistor?

6/6

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.What is the unit of measure of potential difference?

1/6

Q2.Which of these definitions best describes potential difference?

2/6

Q3.Which of these statements best describes the size of an electrical current?

3/6

Q4.Which of these descriptions best describes how to measure the potential difference across a resistor?

4/6

Q5.If a charge of 25 C flows through a lamp and delivers 12 J of energy. What is the potential difference across the lamp?

5/6

Q6.A 3 V cell is used to transfer 15 mJ of energy to a resistor. How much charge must flow through the resistor?

6/6

Video

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Worksheet

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This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Resistance

This quiz will test your knowledge from this lesson and your prior learning.

Q1.Which of these is the symbol for the unit of measure of resistance?

1/7

Q2.Which of these is the correct equation linking potential difference, current and resistance?

2/7

Q3.Which of these is the definition for resistance?

3/7

Q4.What is the symbol for the unit of measure of charge?

4/7

Q5.If the resistance of a series circuit is increased and the cell voltage remains the same, what will happen to the current?

5/7

Q6.A lamp has a resistance of 12 Ω, if the current through the lamp is 2 A, what is the potential difference across the lamp?

6/7

Q7.The national grid has a potential difference of 0.4 MV applied across the transmission lines. If the resistance of the lines is 0.2 kΩ, calculate the current running through the national grid.

7/7

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Resistance

This quiz will test your knowledge from this lesson and your prior learning.

Q1.Which of these is the symbol for the unit of measure of resistance?

1/7

Q2.Which of these is the correct equation linking potential difference, current and resistance?

2/7

Q3.Which of these is the definition for resistance?

3/7

Q4.What is the symbol for the unit of measure of charge?

4/7

Q5.If the resistance of a series circuit is increased and the cell voltage remains the same, what will happen to the current?

5/7

Q6.A lamp has a resistance of 12 Ω, if the current through the lamp is 2 A, what is the potential difference across the lamp?

6/7

Q7.The national grid has a potential difference of 0.4 MV applied across the transmission lines. If the resistance of the lines is 0.2 kΩ, calculate the current running through the national grid.

7/7

Lesson summary: Electrical resistance

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The next lesson in:
Electricity (FT)
is:
Resistance of a wire

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