# Question

Assume that a uniform magnetic field exists perpendicular to the plane of this page (into it) and has a strength of 0.150 T. Assume further that this field ends sharply at the paper’s edges. A single circular loop of wire is also in the plane of the paper and moves across it from left to right at a speed of 1.00 m/s. The loop has a radius of 1.50 cm. The loop starts with its center 10.0 cm to the left of the left edge, in zero field, enters the field, then exits at the right edge back into zero field until its center is 10.0 cm to the right of the right edge.

(a) Make a sketch of the induced emf in the coil versus time, putting numbers on the time axis and taking positive emf to indicate clockwise direction and negative emf to indicate counterclockwise (the emf axis will not have any numbers on it.)

(b) What is the average emf (magnitude) induced in the coil when it is (1) to the left of the left edge, (2) entering the left side of the field, (3) completely in the field region, (4) exiting the right field edge, and (5) out in the zero field region to the right of the right edge.

(a) Make a sketch of the induced emf in the coil versus time, putting numbers on the time axis and taking positive emf to indicate clockwise direction and negative emf to indicate counterclockwise (the emf axis will not have any numbers on it.)

(b) What is the average emf (magnitude) induced in the coil when it is (1) to the left of the left edge, (2) entering the left side of the field, (3) completely in the field region, (4) exiting the right field edge, and (5) out in the zero field region to the right of the right edge.

## Answer to relevant Questions

A uniform magnetic field is at right angles to the plane of a wire loop. If the field decreases by 0.20 T in 1.0 x 10-3s and the magnitude of the average emf induced in the loop is 80 V, (a) What is the area of the loop? ...An inductor is connected by itself to a 60-Hz ac voltage source. To ensure it has the same inductive reactance when it is connected to a 240-Hz source, would you decrease or increase its inductance value? By what factor ...Can an inductor oppose dc current? What about a capacitor? Explain each and why they are different. The current in a resistor is given by I = (2.0 A) sin (380t). (a) What is the frequency of the current? (b) What is the rms current? (c) How much aver-age power is delivered to the resistor? (d) Write an equation for the ...(a) Find the frequency at which a 250-mH inductor has a reactance of 400-Ω. (b) At what frequency would a 0.40μF capacitor have the same reactance?Post your question

0