Match List-I with List-II :
| List-I | List-II |
| Rule | Statement |
| (A) Ampere Swimming Rule | (I) Direction of induced current in a conductor |
| (B) Fleming's Left hand Rule | (II) Direction of magnetic field lines due to current through circular coil |
| (C) Fleming's Right hand Rule in straight conductor | (III) Direction of deflection of magnetic needle due to current |
| (D) Right Hand Thumb Rule | (IV) Direction of force on a current carrying conductor due to magnetic field |
Choose the correct answer from the options given below :
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → (A)-(III), (B)-(IV), (C)-(I), (D)-(II)
Each rule gives a direction in a different magnetic situation: the field of a current, the force on a current, or the induced current.
(A) Ampere Swimming Rule — this matches (III) Direction of deflection of magnetic needle due to current. A swimmer moving along the current and facing the needle finds the north pole deflected towards the left hand.
(B) Fleming's Left hand Rule — this matches (IV) Direction of force on a current carrying conductor due to magnetic field. The forefinger points along the field, the middle finger along the current and the thumb gives the force.
(C) Fleming's Right hand Rule in straight conductor — this matches (I) Direction of induced current in a conductor. The thumb points along the motion, the forefinger along the field and the middle finger gives the induced current.
(D) Right Hand Thumb Rule — this matches (II) Direction of magnetic field lines due to current through circular coil. With the fingers curled along the current in the coil, the thumb points along the field lines through its centre.