A solenoid is formed of a length of wire that carries a constant current I.The solenoid has 66 turns of wire per cm. The magnetic field at the center of the solenoid is measured to be 41 G. (3 marks) Tube Battery Switch www.MiniScience.com 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 decrease 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. Increasing n, the number of turns of wire per millimetre D. Increasing I, the current in the wire

A solenoid is formed of a length of wire that carries a constant current I.The solenoid has 66 turns of wire per cm. The magnetic field at the center of the solenoid is measured to be 41 G. (3 marks) Tube Battery Switch www.MiniScience.com 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 decrease 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. Increasing n, the number of turns of wire per millimetre D. Increasing I, the current in the wire

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Magnetic Field Of Coaxial Cable

The word coaxial means same axis. So for a long straight cable to be coaxial, it must have concentric cylindrical shaped conductor around it. Coaxial cable (popularly called ‘coax’) has various applications ranging from current conductors to radiofrequency signal transmitters. This cable has lower emission losses and provides protection from electromagnetic interference which allows signals with less power to transmit over longer distances.For example, currents produced in the pickup of a stereo turntable generally travel to the amplifier through a coaxial cable.The self-inductance of a coaxial cable is another important characteristic, because it influences the propagation of electrical signals in the cable.

Question

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(a)
A solenoid is formed of a length of wire that carries a constant current I.The solenoid has 66 turns of wire per cm. The magnetic field
at the center of the solenoid is measured to be 41 G.
(3
marks)
Tube
Battery
Switch
www.MiniScience.com
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 decrease 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. Increasing n, the number of turns of wire per millimetre
D. Increasing I, the current in the wire

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