r a solenoid that M Lesa W-116 A opper wire loop is construc as a ccnstant curme
ID: 2038563 • Letter: R
Question
r a solenoid that M Lesa W-116 A opper wire loop is construc as a ccnstant curment through it icted so that its radius, , can change. It is held near a 2 Suppose that the radies of the loop were increasing Use Lenz' law to esplain why there would be an induced current through the wire. Indicate the direction of that current of the induced current by considering the . Check your answer regarding the direction magnetic force that is exerted on the charge in the wire of the loop. e Fiad the direction of the magnetic moment of the loop and " the direction of the force exerted on the loop by the solenoid. 3. A copper wire loop is initially at rest in a uniform magnetic field. Between times r, and ,1 + ?, the loop is shown. Will current flow through the wire of rotated about a vertical axis as the loop during this time interval? If so, indicate the direction of the induced current and explain your reasoning. If not, explain why not. Axis of rotation I Tutorials in Introductory Physics McDermott, Shaffer, and the PExplanation / Answer
2 a.Consider the direction of field die to the solenoid to be positive. The flux linking with the coil increases as the area increases (flux = Magnetic field x Area). According to Lenz's law the effect opposes the cause. Hence the flux due to induced current will be opposite to the changing flux. Hence the flux due to induced current will point towards the left. Looking through the solenoid, the current will be clockwise.
b By applying right hand screw rule the force on the coil is inwards which means that it opposes the increase in radius (which is the cause of induction of current)
c. The direction of magnetic moment is given by right hand thumb rule and comes out to be towards Left. Direction of force already stated in b.
3. Yes, current will be induced due to change in the flux linked with the coil. Initially, there is flux towards the right. As this is decreasing, induced current will want to maintain it. The current will be clockwise as seen in the second figure.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.