IAIN INTERNATIONAT SCHOOL, NAGPURMAGNETIC EFFECTS OF ELECTRIC CURRENT CIIISS: X

Q1. A current carrying conductor produces aylfftrUk' {;il.around it.Q2. If a magnetic compass is placed nu",

"

curr.it carrying conductor, it gets deflected. What does this show?

Q3. Name fwo devic'es that use liagnetic and electric forces together.

Q4. The magnetic field oia magnetic compass resembles that of a bar magnet. True are false? 75 , . o

Q5. Why does the compass needle get deflected when brought near a bar magnet?

be?"aa:< o/ ,,{,, +-^a+-& {*d .e

ffi:'1.',

t.

ii.I ll.

Whatwill happen if the current is reversed? Why?

Whatwillhappenifthemagneticcompassisnowplacedbelowthewire?L*'r't origrnallatlb9What will happen if no current passes through the wire? Why?

Q17. Draw the magnetic field due to the following?

-"'4+

ry &41y"l;WLv)Q1g. What do the concentric circles formed around a current carrying straight wire show?

Q19. What does the magnetic field around a cuilent carrying sfaight conductor depend on? How?

Q20. How can you find the direction of a magnetic field around a current carrying straight conductor?

Q21. What is a solenoid?

Q22. Draw the magnetic field around a solenoid. what does the field resemble?2,{, ,ta.cr.^,o'ea & b- W----

23. What are the magnetic field lines like inside the solenoid? Wlrat does this indicate?

24. What is an electromagnet? How can we make it? ls it temporary or permanqrt?

Ar,v &.e/f4wt'a-0

. -

a-

a p"

--' ---''."--'

r,FFr,ta'!*W1E.={F=5:r:-'.=

Q35. Name some devices that use electric motors

Q36. Draw a simple labeled diagram of an electric motor.

L= Pc,u',*'*t- MAf,.tpr

e'ebs4 @+

*q

Q43. What is a galvanometer?

Q44. lf the galvanometer needle deflects right and then left what does it indicate?

What happen to the (G) attached to coilwhen the key in the circuit of coil 1 is pluggedWhat happens when the key is unplugged?whv?What happend to (G) when a steady current flows in coil?

Q46. What is electromagnetic induction?

ti)(ii)(i ii)Iiv)

Cc,o{p;t*l *'J-8 f*)

Q47. How can we induce a current in a conductor with the help of a magnetic field?(i) Give 2 ways,(ii) What is more convenient?(iii) Which rule gives us the direction of induced current?(ivJ When is the induced current maximum?

Q48. How can we increase the current in a coil placed in a magnetic field?

Q49. What is the frequenry the A. C. generated in India? What does this tell you about is direction?

Q50, What is the advantage of A, C. over D. C?

Q51, Give some sources of D. C.DC: Aal-7.'rut f .o-?I h(. ate^n,,,^t,1, Elc