1) magnetic flux is max at a) 90° b) 180° c) 0° d) 180° or 0° 2) Cgs unit of magnetic flux a) weber b) maxwell c) Tm² d) Tesla 3) if flux is decrease current flow in a) anticlockwise b) Clockwise 4) lenz law obey a) energy conservation b) charge conservation 5) method of producing emf a) change magnetic flux b) change area c) change angle d) all of these 6) working of metal detector is on the basis of a) EMI b) induced emf c) induced current d) none 7) Inertia of electricity a) self induction b) mutual induction c) both d) none 8) one Henry is equal to a) 1ampere b) 1wb/ampere c) 1 wb d) 1 Coulomb 9) in mutual induction of two coins flux is linked with a) primary coil b) secondary coil 10) in mutual induction current passing through a) Primary coil b) secondary coil 11) this diagram represent a) dynamo b) transformer c) galvanometer d) none 12) what is made with soft iron in generator a) armature b) brushes c) core d) a and c 13) what is connect with armature coil to rotate it a) brushes b) rings c) slip rings d) none

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