Karnataka PUC II Science electromagnetic_induction — practice questions
14 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice Karnataka PUC II Science electromagnetic_induction in the app →Faraday's law of electromagnetic induction states that the induced emf around a closed circuit equalsLenz's law is a direct consequence ofMagnetic flux through a flat loop in a uniform field B isThe SI unit of magnetic flux is theSelf-inductance L of a coil is defined byA magnet is pushed towards a coil. The induced current in the coil flows in a direction thatMotional emf induced in a straight conductor of length l moving with velocity v perpendicular to a uniform B iMutual inductance M between two coils is defined such that the emf induced in coil 2 due to changing current iEddy currents areIn a transformer, the ratio of secondary to primary voltage equalsSelf-inductance of a long solenoid of length l, cross-section A, with n turns per unit length isEnergy stored in an inductor carrying current I isA horizontal conducting rod 0.5 m long moves at 10 m/s perpendicular to a 0.4 T magnetic field. The induced emIn Faraday's experiment, a current is induced in a secondary coil at the instant the primary's switch is