Question

1) Induced emf in a coil depends on a) Relative motion of magnet b) Relative motion of coil c) Both d) None 2) When is passed through coil is there magnet a a (changing/unchanging) magnetic flux through the coil that induces an electromotive force(emf) in the coil; the incoming flux is (equal /not equal)to the outgoing flux. 3) While a magnet is moved toward the end of a solenoid, a voltage difference is induced between the two ends of the solenoid wire. The voltage difference would be larger if a) the speed of the magnet were increased. b) the solenoid contained more loops (while having the same length). c) the bar magnet produced a stronger magnetic field. d) All of the above statements are true. e) Only two of the above statements are true.

Answer 1

(1) Induced &mf depends on the relative motion of both coll and magnet. (2) when a mag het is passed through a coul there is Changing magnetic flux through the coul that inames ent in the coil. The incoming flux is not Equal to outgoing flax. (3) since the no induced emt is proportional to magntic field barmagnet produced more the field mare the change in magnetic flux is also proportional to tal velouty of magnet. and also proportional to the number of loops all the statemeuts are corret, Answer is (d) UUU 80 (4) E= unde dt N = 284 N2 = 8 61 = 7.95 &z= 1.23 {, = -N, dd dt 7.95 =-284 de a do = -0.027993 at at. Es = N₂ dd = N2 = -- at 2 do E2 Now dt ~ 44 No = 1.23 0027993 N2 = 44

mm (a) when the bott is moved there is a deplenion in the galvanom domagner (6) since the flux through the coil is changing when the coil is magnet is moved which induced a emf in the coil which causes and depletion (6) when the velouty is increase the flux change rate is also increase since the ent is proportional o rate of change of flux 80 emt will also increase, mare deflection in galvenometer can be observed. (6) sime d sino a d sino a mi nd take m=3 sino = y d) =31 t = 0.2x7.5x10-6 3x1 = 0.5810-6 scrun de 5x107m Id=500mm se 500 nm

D- sorun d=2x105 m 1 - 2005 625mm D = 6.com adsino=mx sino = 625x10 9 2x10-5 sino = 312.5x15 4. or 312.5 X10 & gend The distance between mao and we will a door-zx00312546 dooztom y = 0.03125x6 y = 18.75cm = 18.8cm (c) diffraction

them i (a) I since the separation between given by 27 So if a decrease distance between fernges increares. ce between slit and sewn wave dength used arder de separation between two slits. 27 1 - Sun d = 2.2 x 100 m easing = md sino = mi - 1x511 10 9 2.2 x 10-6 Lou 0.23227 and for m=2 To = 0.46454 und