please I need help for answering all those questions clearly A circular loop of
ID: 1506889 • Letter: P
Question
please I need help for answering all those questions clearly
A circular loop of wire lies in the plane of the paper. An increasing magnetic field points out of the paper. What is the direction of the induced current in the loop? The figure shows a bar magnet being pushed toward a conducting loop from below, along the axis of the loop. a. What is the current direction in the loop? b. Is there a magnetic force on the loop? If so, in which direction? C. Is there a force on the magnet? If so, in which direction? A 200-loop coil of cross sectional area 8.5 cm^2 lies in the plane of the page. An external magnetic field of 0.060 T is directed out of the plane of the page. The external field decreases to 0.020Tin 12 milliseconds. a. What is the magnitude of the total change in the external magnetic flux enclosed by the coil? b. What is the magnitude of the average voltage induced in the coil as the external flux is changing? C. If the coil has a resistance of 4.0 ohms, what is the magnitude of the average current in the coil?Explanation / Answer
1)
induced current is clockwise
2)
the magnetic field increases in upward direction
induced magnetic field is in down wards
induced current in clock wise
(b)
yes towards right side
c)
yes downwards
++++++++
3)
total change inmagneitc flux = N*dB*A = 200*(0.06-0.02)*8.5*10^-4 = 0.0068 Tm^2
b)
average voltage e = 0.0068/0.012 = 0.57 v
(c)
i = e/R = 0.57/4 = 0.1425 A
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.