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Magnetic Effects of Electric Current
High trendapprox. 6 marksSections B/C/D — right-hand rules and solenoid diagrams, plus short-answer items on domestic circuits and AC vs DC.
CBSE 2027 — dates, rules and official papers →Ask the tutor1Always name the rule you are applying before stating the direction — examiners mark this explicitly.
Notesformulae · proofs · mind-map — one view
Learn the 5 conceptsteach yourself first, then practise each
Right-hand thumb rule (field around a straight conductor)1–2 marks
Find direction of magnetic field from current direction.
Solenoid as a bar magnet2–3 marks
Use the right-hand grip rule to identify N and S poles of a current-carrying solenoid.
Force on a current-carrying conductor (Fleming's left-hand rule)2–3 marks Visual
Find direction of force on a conductor in a magnetic field.
Direct current vs alternating current (AC frequency in India 50 Hz; advantage of AC over DC)1–2 marks
Contrast one-way DC with periodically reversing AC and state why AC is transmitted over long distances.
Domestic electric circuits (live / neutral / earth wires, fuse, earthing, overloading and short-circuit)2–3 marks
Name each wire by colour and job, and explain the two safety devices — earthing and the fuse.
When you’re ready — practise or test the whole topic