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MODERN PUBLICATION-ELECTROMAGNETIC INDUCTION-REVISION EXERCISE (Very Short Answer Questions Carrying I mark)
- The induced e.m.f. is sometimes called back e.m.f. Why ?
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- Does the change in magnetic flux always produce both emf and current?
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- A vertical matallic pole falls down through the plane of magnetic meri...
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- Two identical loops, one of copper and other of manganin, are removed ...
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- What will be the magnitude of induced emf in a rectangular loop ABCD, ...
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- Predict the polarity of the capacitor in the situation described below...
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- Use Lenz's law to determine the direction of the induced current when ...
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- The electric current flowing in a wire in the direction from B to A de...
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- What do you mean by magnetic flux through a surface?
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- A long straight current carrying wire passes normally through the c...
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- What is the relation between weber and Maxwell ?
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- Predict the direction of induced current in metal rings 1 and 2 when c...
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- Volt-sec is the unit of which physical quantity?
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- State Lenz's law of electromagnetic induction. The magnetic threading ...
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- When the north pole of a magnet is moved away from a coil, what is the...
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- Why a spark is produced in a switch sometimes when it is switched off?
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- Derive the expression for motional emf induced in a conductor moving i...
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- Define self-inductance of a coil. Obtain the expression for the energy...
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- What is the power required to move a conductor of length l having resi...
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- Can a moving bar magnet exert a force on a stationary charge? Explain.
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