GCSE Physics – Magnetic flux density
Learning Objectives
I can describe what happens to an object when work is done on it
I can recall the units needed for F = BIl
I can rearrange F = BIl
I can use F = BIl
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Question 1 of 28
1. Question
What does the motor force depend on?
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Question 2 of 28
2. Question
What causes a force to act on a conductor in a magnetic field?
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Question 3 of 28
3. Question
What is magnetic flux density?
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Question 4 of 28
4. Question
What does magnetic flux density show?
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Question 5 of 28
5. Question
What is the formula for the force produced in the motor effect?
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Question 6 of 28
6. Question
Rearrange the magnetic flux density equation to show magnetic flux density as the subject.
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Question 7 of 28
7. Question
Rearrange the magnetic flux density equation to show the length of the wire as the subject.
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Question 8 of 28
8. Question
Rearrange the magnetic flux density equation to show current as the subject.
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Question 9 of 28
9. Question
What is B in the magnetic flux density formula?
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Question 10 of 28
10. Question
What is I in the magnetic flux density formula?
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Question 11 of 28
11. Question
What is L in the magnetic flux density formula?
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Question 12 of 28
12. Question
What is magnetic flux density measured in?
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Question 13 of 28
13. Question
What else can magnetic flux density be measured in?
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Question 14 of 28
14. Question
How is current measured?
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Question 15 of 28
15. Question
What is the length of wire measured in?
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Question 16 of 28
16. Question
What is the symbol for Tesla?
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Question 17 of 28
17. Question
What force is produced when B = 0.5 T, I = 5.0 A and L = 45 cm?
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Question 18 of 28
18. Question
What force is produced when B = 1.2 T, I = 4.8 A and L = 22 cm?
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Question 19 of 28
19. Question
What is the length of the wire if 10.0 A of current causes a force of 3.1 N if B = 0.96 T?
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Question 20 of 28
20. Question
What is the length of the wire if 2.5 A of current causes a force of 5 N if B = 2.5 T?
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Question 21 of 28
21. Question
What is the length of the wire if 4.0 A of current causes a force of 3.7 N if B = 2.3 T?
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Question 22 of 28
22. Question
A 35 cm long piece of string experiences a force of 0.98 N when a current of 5.0 A flows through it. Calculate the magnetic flux density of the field.
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Question 23 of 28
23. Question
A 50 cm long piece of string experiences a force of 1.4 N when a current of 2.0 A flows through it. Calculate the magnetic flux density of the field.
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Question 24 of 28
24. Question
A 15 cm long piece of string experiences a force of 2.4 N when a current of 10.0 A flows through it. Calculate the magnetic flux density of the field.
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Question 25 of 28
25. Question
A 5 cm long piece of string experiences a force of 4 N when a current of 20.0 A flows through it. Calculate the magnetic flux density of the field.
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Question 26 of 28
26. Question
What current flows to produce a 2.4 N force if B = 0.5 T and the length of the wire is 30 cm?
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Question 27 of 28
27. Question
What current flows to produce a 1.75 N force if B = 0.9 T and the length of the wire is 25 cm?
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Question 28 of 28
28. Question
What current flows to produce a 0.56 N force if B = 0.7 T and the length of the wire is 8 cm?
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