- Q1. non-contact
- Q2. Newton (N)
- Q3. repel, attract
- Q4. Iron, Nickel, Cobalt
- Q5. Bar magnet
- Q6. Magnetic field lines
- Q7. The end where field lines emerge is North (N); the end where they enter is South (S).
- Q8. a) False b) False c) True d) False e) True
- Q9. Strongest at the poles; field lines are densest there.
- Q10. A magnet that retains its magnetic properties without an external field.
- Q11. A temporary magnet created by exposure to a magnetic field.
- Q12. attraction
- Q13. Iron filings align along the magnetic field lines, revealing their pattern.
- Q14. Bar ③ (EF) is unmagnetized iron because it repels both ends of magnet ①, which only occurs if it is induced to have like poles facing each magnet end.
- Q15. a) Field lines diverge between two North poles. b) Field lines diverge between two South poles. c) Field lines connect from North to South pole.
- Q16. a) Similarities: Both are non-contact forces; Differences: Gravity always attracts, acts on mass; magnetism can attract or repel, acts on magnetic materials/charges. b) Similarities: Both are non-contact, follow inverse-square laws; Differences: Magnetism acts on moving charges/magnetic materials; electrostatic acts on stationary charges.
Parent Tip: Review the logic above to help your child master the concept of electricity and magnetism worksheet.
