A the element of yellow omised the muserial when ligh of frequency nematerial Le

Question

A the element of yellow omised the muserial when ligh of frequency nematerial Less than in incidenton material A supbubble en IJJ) havigawallaickness of 120 mm isfloating in air. The wavelength of the visible flies horizontally and due north at a speed of 60.0 m/s fegion directed 600 telow the What the magnitude 6 A small ainlane with a wingpan of 12 m where the magnetic field of Barth is 600m (e)22 mv 7. A bar magner is held above the center of a wire loop lying in the horizontalplane. The south end of the magnet is toward the loop. After the magnet is dopped, what istrue of the current in the resistor as v magnet falls toward the loop. (c) is clockwise after the magnet has moved through the loop and moves away from it. (do Itis always clockwise. A generator contains a 100Hum poil that rotates 100 times per second. If each turn has an 1000 am and the mapnetic field through the coils is 0.050 o T, what is the maximum emfinduced in the coil? (a) 3IAV (b)62.8 V (c)0314 v (d) 6.28 V (e) 31400 V

Explanation / Answer

8.

EMF = N*A*B*w*sin wt

max emf will be when sin wt = 1

EMF)max = N*A*B*w

N = 100 turn

A = 1000 cm^2 = 0.1 m^2

B = 0.050 T

f = 10 times per second

w = 2*pi*f

EMF)max = 100*0.1*0.05*2*3.14*10 = 31.4 V

Correct option is A.

6.

induced emf = B*V*L*sin A

induced emf = 60*10^-3*60*12*sin 60 deg = 37.41 V

option A

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