Same chapter3 marksDifficulty: Medium
What is a magnetic field, and how is its direction defined?
Electricity and Magnetism
2 marksDifficulty: Easy
Distinguish between a conductor and an insulator, giving two examples of each.
Original Khojo Papers practice question — not from a past board paper.
Answer
A conductor allows an electric current to pass through it easily because it has free electrons; copper and aluminium are examples. An insulator does not allow a current to pass because its electrons are firmly bound; rubber and glass are examples.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
This is why wires are made of copper and covered with plastic.
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