ELECTROMAGNETIC INDUCTION MAGNETIC EFFECT OF ELECTRE CURRENT 13 Class 10th Physics (Practice Sheet) 1 When a current-carrying conductor is moved perpendicular to a magnetic field, the phenomenon produced is called: A. Magnetic resonance B. Electromagnetic induction C. Magnetic deflection D. Electrostatic induction 2 The direction of the induced current in a conductor can be determined by: A. Lenz's law B. Ohm's law C. Newton's law D. Coulomb's law 3 An electric generator converts: A. Mechanical energy into electrical energy B. Heat energy into electrical energy C. Chemical energy into electrical energy D. Electrical energy into mechanical energy 4 The device used to convert electrical energy into mechanical energy is called: A. Transformer B. Dynamo C. Galvanometer D. Inductor 5 The phenomenon of electromagnetic induction is based on the law formulated by: A. Faraday's law of electromagnetic induction B. Coulomb's law C. Newton's law of motion D. Pascal's principle 6 When a bar magnet is placed near to the circular coil having 50 turns, the magnetic field density changes at a rate of 0.10 T/s. Find the emf induced in the coil. 7 A loop of wire is placed in a magnetic field and the magnetic flux through the loop is increasing at a rate of 0.02 T·m2/s. if the resistance of the loop of wire is 5 ohms then what is the induced current in the loop? 8 The electric current is flowing in a wire in the direction from B to A. Figure out the direction of the current induced in the metallic loop shown below: 9 There are two spherical bobs - one composed of metallic, the other of glass. Both of the blobs are of the same size. Which one of the two would reach earlier if they fall free from the same height? State the reason. Page 1 Email: Phone No: Website:
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