(a) A solenoid is formed of a length of wire that carries a constant current I .The solenoid has 46 turns of wire per cm. The magnetic field at the center of the solenoid is measured to be 33 G. (3 marks) + Tube Battery Switch www.MiniScience.com
(a) A solenoid is formed of a length of wire that carries a constant current I .The solenoid has 46 turns of wire per cm. The magnetic field at the center of the solenoid is measured to be 33 G. (3 marks) + Tube Battery Switch www.MiniScience.com
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Transcribed Image Text:=
The current through the solenoid in (A) :
(b)
A length of wire is formed into a solenoid with n turns of wire per millimetre. The wire carries
a constant current I. The magnetic field at the center of the solenoid is B.
Which of the following changes would increase the magnetic field strength at the center
of the solenoid, assuming everything else remains constant? Explain why?
(2 marks)
A. Decreasing the length of the solenoid by removing turns of wire while keeping n
constant
B. Decreasing I, the current in the wire
C. Decreasing n,the number of turns of wire per millimetre
D. Increasing I, the current in the wire
Transcribed Image Text:III
=
(a)
A solenoid is formed of a length of wire that carries a constant current I .The solenoid has 46
turns of wire per cm. The magnetic field at the center of the solenoid is measured to be 33 G.
(3 marks)
+
Tube
Battery
Switch
www.MiniScience.com
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