Compare the voltage at A vs. B for each part. __ Part (a) A. Vb > Va __ Part (b)

Question

Compare the voltage at A vs. B for each part.

__ Part (a)       A. Vb > Va
__ Part (b)       B. Va > Vb
__ part (c)       C. Not enough info to tell
__ part (d)       D. Va = Vb
__ part (e)
__ part (f)

The more explanation the better. Thanks!

le Switch on the bottom chr n 29 9.8 Polarity of Induced Voltage-. 1 For ench sinustion described below, indicate so, indicate the side of the resistor at the higber voltage and the direetion whether a voltage is induced across the resistor. If directdon of the induced current A FI bout (d) A magnet in the plane of the paper is rotated the fixed loop that is perpendicular to the paper. positions relative to a fixed loop that is perpendicular to the plane of the paper. ircup ) A magnet in the plane of the paper moves toward a (e) A magnet in the plane of the paper is held fixed as a loop perpendicular to the plane and originally open is stretched vertically so its opposite sides come together fixed loop that is also in the plane of the pape Pull up Remains A magnet in the plane of the paper moves away from (0 A magnet in the plane of the paper is held fxed as a A magnet in the plane of the paper moves away from ()A magnet in the plane of the paper is held fixed as a a fixed loop that is perpendicular to the plane of the paper. loop originally perpendicular to the plane of the paper, is rotated clockwise into the plane of the paper © ALPS K , Box 4013, University PL, IX C10 (Magnetism) A FIPSE Project Las Cruces, NM 88003

Explanation / Answer

In (a) part flux is increasing in the loop hence current in the loop will be anticlockwise as loop will try to oppose the increase in flux So Va > Vb

In (b) Va=Vb as the loop is in the plane of magnet . So no flux is associated with the loop. So no current flow

In (c)  part flux is decreasing in the loop hence current in the loop will be clockwise as loop will try to oppose the decrease in flux So Va < Vb

In (d) we cannot tell as the flux is sometimes increasing sometimes decreasing due to rotation of the magnet

In (e) flux decreases as area decreases. So current will be anticlockwise. So Va> Vb

In (f) we cannot tell as the flux is sometimes increasing sometimes decreasing. sometimes current will be clockwise sometimes anticlockwise

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