Magnetic Effects of Electric Current for Class X

Magnetic Effects of Electric Current

1. Why natural magnet was called Lodestone?
2. Write two common properties of magnet.
3. Can you make a magnet having a north pole only?
4. Define magnetic field
5. What are magnetic field lines?
6. Draw magnetic field lines around a bar magnet.
7. Write two properties of magnetic field lines.
8. What is the shape of magnetic field lines around a straight conductor carrying current?
9. State right hand grip rule.
10. State two factors on which the strength of magnetic field at a point due to a current carrying conductor depends.
11. Draw a diagram of magnetic field lines due to current carrying circular loop
12. What is a solenoid?
13. Draw a diagram showing the pattern of field lines around a current carrying solenoid.
14. State the factors affecting the strength of magnetic field due to a solenoid.
15. How will you determine the polarity of a solenoid from the direction of current?
16. What is an electromagnet?
17. How can we increase the strength  of an electromagnet?
18. State Fleming's left hand rule.
19. What is an electric motor?
20. State the principle of working of an electric motor.
21. What is electromagnetic induction?
22. What is magnetic flux?
23. State Fleming's right hand rule.
24. What is an electric generator or a dynamo?
25. Write the differences between ac and dc dynamo.
26. How is the alternating current produced in a dc generator converted to dc in the output?
27. Write the advantages of AC over DC.
28. Write the color coding of wires in domestic circuits.
29. Why is switch connected always to the live wire only?
30. What is an electric fuse? Explain its working.
31. WhAT is earthing?
32. Explain the terms "short circuiting" and "Over Loading"?
33. What are the materials used for making electric fuse and explain why?
34. State SNOW rule.
35. Draw diagram showing (i) uniform magnetic field (ii) Non uniform magnetic field.
36. Draw a schematic diagram showing typical domestic wiring.