YASH CLASSES [ X ]
1. what is a unit of magnetic field ?
2. what is a unit of magnetic filed Strength ?
3. what is a properties of magnetic Lines ?
4. write the right hand
rule ?
5. what is solenoid ?
6. what is a properties of
solenoid ?
7. what
is difference between
Electromagnet
And permanent magnet?
8. what is a difference between direct
and alternating current .
9. what is a applications of alternating Current ?
10. what is test of
magnetism ?
11. write Fleming’s
left hand rule ?
12. write Fleming’s
right hand rule ?
13. Define
electromagnet .
14. what is a law
of magnetic poles ?
15. what is a meant
by electromagnetic induction ?
16. what is a
generator ?Name the principle on
which
its based ?
17.Name the factors
which are responsible for the
production
of induced efm in a coil ?
18. what is a
artificial magnet ? give example .
19. who discovered
motor principle ?
20. what is an electric fuse ?
21. what is
electric motor ? define it.
22. In which
direction magnetic lines go ?
23. Give two reason
why different electric appliances in
Domestic circuit are connected in
parallel ?
24. Define A.C. and
D.C. current ?
25. what is a meant
by short-circuit ?
26. At the short –
circuit the current in the circuit……..
27. Material used
for making a fuse wire must have :……
28.Electromagnet
usually use :
a. bar magnets b. solenoids c. any one above d. none
29.permanent
magnets are generally , made by
a.carbon steel b.chromium steel c.cobalt &
tungsten
d. all
30. In india ,
A.C.voltage and frequency used are
a. 220V, 60Hz b. 110V
, 60 Hz c. 220 V , 50Hz d.110V, 50Hz