Oswaal Cbse Class 10 Science Question Bank May 2026

Why does a compass needle show deflection when kept near a current-carrying wire? State the rule used to find the direction of the magnetic field.

Which of the following correctly represents Fleming’s Left-Hand Rule? (a) Thumb – Current, Forefinger – Motion, Middle finger – Field (b) Thumb – Motion, Forefinger – Field, Middle finger – Current (c) Thumb – Field, Forefinger – Current, Middle finger – Motion (d) Thumb – Current, Forefinger – Field, Middle finger – Motion 2. Very Short Answer Questions (VSA) – 1 Mark each Q.5 State one difference between a permanent magnet and an electromagnet. Q.6 Name the device which converts mechanical energy into electrical energy. Q.7 What is the frequency of direct current (DC) in India? 3. Short Answer Questions Type I (SA-I) – 2 Marks each Q.8 Draw a labeled diagram to show the pattern of magnetic field lines around a current-carrying solenoid. Mark the north and south poles. Oswaal cbse class 10 science question bank

Name two factors on which the strength of the magnetic field produced by a solenoid depends. (1) Why does a compass needle show deflection when