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(a) Write the special name given to the ...

(a) Write the special name given to the coil AB which has many circular turns of insulated copper wire.
(b) List two factors on which the strength of the magnetic field produced by AB depends.
(c) What is the effect of placing an iron core in the coil AB?

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(a) Coil AB is a solenoid.
(b) (i) Strength of the current. (ii) Number of turns in the coil.
(c) The magnetic field associated with the solenoid increases tremendously. It becomes an electromagnet.
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A circular coil of wire consisting of 100 turns, each of radius 8.0 cm carries a current of 0.40 A. What is the magnitude of the magnetic field B at the centre of the coil?

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OSWAAL PUBLICATION-MAGNETIC EFFECTS OF ELECTRIC CURRENT-TOPIC -1 (SHORT ANSWER TYPE QUESTIONS - I )
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