alleryStart learning →The force on a current-carrying conductor placed in a magnetic field is found using
Athe right-hand thumb rule
BFleming's right-hand rule
CFleming's left-hand rule
DOhm's law
Answer & Solution
Correct answer: C. Fleming's left-hand rule
1. A current in a magnetic field experiences a force perpendicular to both.
2. **Fleming's left-hand rule** relates the directions of field, current and force (thumb = force, forefinger = field, middle finger = current).
3. This is the principle of the electric motor.
_Source: Karnataka SSLC (KSEEB) Class 10 Science, Ch13 'Magnetic Effects of Electric Current', §13.4_
Keep practising Magnetic Effects of Electric Current
Browse all Magnetic Effects of Electric Current questions for Karnataka SSLC (Class 10), or explore more Science topics.
Related questions
Match each rule to what it givesOverloading of a domestic circuit happens whenMagnetic field lines are said to be crowded (closer together) where the magnetic field isA short circuit occurs whenAn electric fuse protects a circuit byIn a household wiring, the wire that acts as a safety measure by connecting the metallic bIn India, the alternating current supplied to homes changes its directionThe direction of the current induced in a conductor moving in a magnetic field is given by