Q24 · 2023 · Paper 1Simple familiar4 marks
QUESTION 24 (4 marks)
A solenoid consisting of 1240 turns is shown.
Determine the magnitude and direction of the magnetic field inside the solenoid. Show your working.
WORKED SOLUTION
4 marksQCAA guide · typeset solution
ANSWER
See worked solution below.
Worked solution
Sample response The
1240 * re
= = -1
n= 34 3100m fie
a * ce
B= gn it
= 472x107 x3100x0.5 • cz
4
= 0.0019 T t
« id
Magnitude = 0.0019 T (to two significant figures)
Direction = to the left
e recognises the scenario relates to a magnetic
field inside a solenoid [1 mark]
• calculates the number of turns per metre
[1 mark]
e calculates the magnitude of the magnetic field
[1 mark]
e identifies the direction of the magnetic field
[1 mark]
One QCAA sample method typeset for web; criterion wording is adapted from the official marking guide.
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