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MCQs: The magnetic field produced near the current-carrying conductor is
Category: Physics MCQs, Published by: teswesm
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MCQs: Magnetic effect of current is called
Category: Physics MCQs, Published by: teswesm
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MCQs: The production of induced current in one coil due to production of current in neighboring coil is
Category: Physics MCQs, Published by: teswesm
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MCQs: A transformer is designed to convert the voltage from 240 V a.c mains to 12 V, and has 4000 turns on its primary coil. If it is 100% efficient, and the current in the secondary coil was 0.4 A then the current in the primary coil should be
Category: Physics MCQs, Published by: teswesm
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MCQs: In a D.C motor the coil in a magnet rotates maximum to about
Category: Physics MCQs, Published by: teswesm
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MCQs: When the plane of the coil is perpendicular to the lines of magnetic force, the number of lines of magnetic force passing through the coil will be
Category: Physics MCQs, Published by: teswesm
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MCQs: If we grasp a wire with right hand such that the thumb pointed in the direction of current, then the curling fingers of hand will point the
Category: Physics MCQs, Published by: teswesm
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MCQs: If the secondary voltage is larger than the primary voltage, the transformer is called a
Category: Physics MCQs, Published by: teswesm
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MCQs: Lenz devised a rule to find out the direction of
Category: Physics MCQs, Published by: teswesm
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MCQs: The force on the wire is at right angles to both the direction on the magnetic field and the direction of the current. This is discovered by
Category: Physics MCQs, Published by: teswesm
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MCQs: It is made of many loops mounted on a shaft or axle
Category: Physics MCQs, Published by: teswesm
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MCQs: In a practical electric motor, the coil is called
Category: Physics MCQs, Published by: teswesm
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MCQs: Electric motor is a device which converts electric energy into
Category: Physics MCQs, Published by: teswesm
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MCQs: To control a large current with the help of a small current, we use the
Category: Physics MCQs, Published by: teswesm
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MCQs: If we apply the law of conversion of energy to electromagnetic induction, the electrical energy induced in a conductor comes from the
Category: Physics MCQs, Published by: teswesm
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MCQs: A transformer is needed to convert 200 V into a 10 V supply. If there are 1000 turns on the primary coil, then the number of turns on the secondary coil is
Category: Physics MCQs, Published by: teswesm
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MCQs: The strength of magnetic field is defined as
Category: Physics MCQs, Published by: teswesm
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MCQs: When a coil rotated in magnetic field the induced current in it
Category: Physics MCQs, Published by: teswesm
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MCQs: The simple coil placed in a magnet can not rotate more than
Category: Physics MCQs, Published by: teswesm
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MCQs: The two forces which are equal in magnitude but opposite in direction form a
Category: Physics MCQs, Published by: teswesm
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