Match List - I with List - II
List -I List -II
(A). AC generator (I). Detects the presence of current in the circuit
(B). Galvanometer (II). Converts mechanical energy into electrical energy
(C). Transformer (III). Works on the principle of resonance in AC circuit
(D). Metal detector (IV). Changes an alternating voltage for smaller or greater value
Choose the correct answer from the options given below :-

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$A - (II), B - (I), C (IV), D (III)$

$A - (II), B - (I), C (III), D (IV)$

$A - (III), B - (IV), C (II), D (I)$

$A - (III), B - (I), C (II), D (IV)$

answer is A.

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Detailed Solution

AC generator converts mechanical energy into electrical energy. Galvanometer shows deflection when current passes through it so it is used to show presence of current in any wire. Transformer is used to step up or step down the voltage. Metals detectors contain inductor coils and use principle of induction and resonance in AC circuit.

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List -I	List -II
(A). AC generator	(I). Detects the presence of current in the circuit
(B). Galvanometer	(II). Converts mechanical energy into electrical energy
(C). Transformer	(III). Works on the principle of resonance in AC circuit
(D). Metal detector	(IV). Changes an alternating voltage for smaller or greater value