Match List-I with List-II
| List-I | List-II |
| (A) Faraday's law | (I) Current induced in a conductor moving perpendicular to a magnetic field |
| (B) Lenz's Law | (II) Direction of force on a straight current carrying conductor placed perpendicular to a magnetic field |
| (C) Fleming's right-hand rule | (III) Magnitude of induced emf |
| (D) Fleming's left-hand rule | (IV) Direction of induced current |
Choose the correct answer from the options given below.
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → (A) - (III), (B) - (IV), (C) - (I), (D) - (II)
Faraday's and Lenz's laws together describe electromagnetic induction (one gives the size, the other the direction), while Fleming's two rules give directions for a moving conductor and for a current-carrying conductor.
(A) Faraday's law — this matches (III) Magnitude of induced emf. The induced emf equals the rate of change of magnetic flux, \( |\varepsilon| = d\Phi_B/dt \).
(B) Lenz's Law — this matches (IV) Direction of induced current. The induced current flows in the direction that opposes the change in flux that produces it.
(C) Fleming's right-hand rule — this matches (I) Current induced in a conductor moving perpendicular to a magnetic field. The thumb shows the motion, the forefinger the field and the middle finger the induced current (the generator rule).
(D) Fleming's left-hand rule — this matches (II) Direction of force on a straight current carrying conductor placed perpendicular to a magnetic field. The forefinger shows the field, the middle finger the current and the thumb the force (the motor rule).