« previous next »
Pages: 1 ... 132 133 [134] 135 136 ... 160   Go Down

Author Topic: ALL PHYSICS DOUBTS - POST HERE !!  (Read 230560 times)

Offline WARRIOR

  • SF Master
  • ******
  • Posts: 1473
  • Reputation: 51196
  • Egyptian And so damn proud . I love you jesus!
Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #1995 on: May 26, 2010, 03:45:09 pm »
Quote from: A@di on May 26, 2010, 03:44:31 pm
Don't lose more than 5 marks in paper 3. A* surely.
ouch

5 marks max?

Logged
NO secrets to SUCCESS , it is the result of 1.HARD WORK 2.GOOD PREPARATION 3.LEARNING FROM FAILURE
But it ain't how hard you hit; it's about how hard you can get hit, and keep moving forward-Balboa

Offline thenewkid™

  • legendary
  • SF Geek
  • ****
  • Posts: 535
  • Reputation: 35181
  • Gender: Male
  • ^funny baby =P
Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #1996 on: May 26, 2010, 03:45:46 pm »
Quote from: ang3l on May 26, 2010, 03:39:45 pm
Whats the difference between Electromagnetism and Electro magnetic induction?
thx
electromagnetic induction is the emf induced due to a magnetic field

wheras an electromagnet is a magnet which can be switched on and off
and is made due to the magnetic field of a current
hope this helped
Logged
<3 freekicks <3
<3 football <3
<3 lamborghini <3

Offline Ghost Of Highbury

  • O_o_O lala!
  • SF Farseer
  • *******
  • Posts: 4096
  • Reputation: 41428
  • Gender: Male
  • Namaskaram!
Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #1997 on: May 26, 2010, 03:47:19 pm »
Quote from: Kimo Jesus on May 26, 2010, 03:45:09 pm
ouch

5 marks max?



Don't lose more than 5 marks ...its good to be on the safer side.
Logged
divine intervention!

Offline Malak

  • Honorary Member
  • SF Farseer
  • *****
  • Posts: 4454
  • Reputation: 65534
  • A warm smile is the universal language of kindness
Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #1998 on: May 26, 2010, 03:47:57 pm »
Quote from: thenewkid™ on May 26, 2010, 03:45:46 pm
electromagnetic induction is the emf induced due to a magnetic field

wheras an electromagnet is a magnet which can be switched on and off
and is made due to the magnetic field of a current
hope this helped

Thx..:D

Another thing...When does the wire/coil watever cuts the magnetic field..When it is vertical or horizontal  ???
Logged
If you are a man who degrades women then allow me to respectfully remind you that you came from ONE

Reminder to myself: Stop worrying and start working

SF magazine 2012 - Download here

Offline ambitious94

  • SF Immigrant
  • **
  • Posts: 78
  • Reputation: 120
  • Gender: Female
Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #1999 on: May 26, 2010, 03:48:38 pm »
Quote from: A@di on May 26, 2010, 03:24:03 pm
9B) red-->blue-->green-->yellow

ATTACHED
can u  plz temme y the others r NOT THE ANSWER...I'd really appreciate it. I mean current flows thru all of them doesnt it?
What does a full-wave rectification circuit look like?
THANKS :)
Logged

Offline WARRIOR

  • SF Master
  • ******
  • Posts: 1473
  • Reputation: 51196
  • Egyptian And so damn proud . I love you jesus!
Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #2000 on: May 26, 2010, 03:48:58 pm »
allright ! will do !

thanks for all ur help

i hope ur heere all day incase i need anything

ima work my but off all night 2day !
Logged
NO secrets to SUCCESS , it is the result of 1.HARD WORK 2.GOOD PREPARATION 3.LEARNING FROM FAILURE
But it ain't how hard you hit; it's about how hard you can get hit, and keep moving forward-Balboa

Offline M'i'D'o

  • Newbie
  • *
  • Posts: 40
  • Reputation: 187
  • Gender: Male
  • GuD LuCk EvErYOnE In YouR ExAmS
Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #2001 on: May 26, 2010, 03:49:39 pm »
hey everybody there is a question in paper 1 physics i was solving yesterday while studying...
a steel bar is hanged near an electromagnet....
A ( attract  attract )
B ( attract  repel   )
C  ( repel attract )
D ( repel repel )
Logged
MaKe LoVe NoT WaR.... ConDomS ArE CheApEr THaN GuNs :D:D

Offline Ghost Of Highbury

  • O_o_O lala!
  • SF Farseer
  • *******
  • Posts: 4096
  • Reputation: 41428
  • Gender: Male
  • Namaskaram!
Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #2002 on: May 26, 2010, 03:52:18 pm »
Quote from: ambitious94 on May 26, 2010, 03:48:38 pm
can u  plz temme y the others r NOT THE ANSWER...I'd really appreciate it. I mean current flows thru all of them doesnt it?
What does a full-wave rectification circuit look like?
THANKS :)

B and D is black to red. C, the circuit aint complete, it wil never reach the lower terminal.
Logged
divine intervention!

Offline Ghost Of Highbury

  • O_o_O lala!
  • SF Farseer
  • *******
  • Posts: 4096
  • Reputation: 41428
  • Gender: Male
  • Namaskaram!
Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #2003 on: May 26, 2010, 03:52:38 pm »
Quote from: M'i'D'o on May 26, 2010, 03:49:39 pm
hey everybody there is a question in paper 1 physics i was solving yesterday while studying...
a steel bar is hanged near an electromagnet....
A ( attract  attract )
B ( attract  repel   )
C  ( repel attract )
D ( repel repel )

Paper link please.
Logged
divine intervention!

Offline J.Darren

  • SF Geek
  • ****
  • Posts: 405
  • Reputation: 956
  • Gender: Male
Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #2004 on: May 26, 2010, 03:52:54 pm »
Quote from: ang3l on May 26, 2010, 03:47:57 pm
Thx..:D

Another thing...When does the wire/coil watever cuts the magnetic field..When it is vertical or horizontal  ???
- When a current carrying wire / coil goes between the magnetic field.
- When a magnet is pushed in / out of the coil.
- When a wire goes across the magnetic field.
- When an electromagnet is placed right next to a solenoid, it only cuts the magnetic field at the instance when it is being switched on and off.
Logged
Do not go where the path may lead. Go instead where there is no path and leave a trail.

Offline mdwael

  • SF Immigrant
  • **
  • Posts: 115
  • Reputation: 144
  • Gender: Male
Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #2005 on: May 26, 2010, 03:53:42 pm »
Quote from: Ivo on May 26, 2010, 03:29:30 pm
Sorry for the rubbish diagram!

You saved my life!  :)
Logged
"We all want to be different, which makes us all the same"

Offline Adzel

  • SF Citizen
  • ***
  • Posts: 230
  • Reputation: 272
  • ALLAH IS THE GREATEST
Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #2006 on: May 26, 2010, 03:55:10 pm »
Quote from: M'i'D'o on May 26, 2010, 03:49:39 pm
hey everybody there is a question in paper 1 physics i was solving yesterday while studying...
a steel bar is hanged near an electromagnet....
A ( attract  attract )
B ( attract  repel   )
C  ( repel attract )
D ( repel repel )

A ( attract  attract )...Im very sure!  ;)
Logged

Offline WARRIOR

  • SF Master
  • ******
  • Posts: 1473
  • Reputation: 51196
  • Egyptian And so damn proud . I love you jesus!
Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #2007 on: May 26, 2010, 03:55:46 pm »
Quote from: ang3l on May 26, 2010, 03:47:57 pm
Thx..:D

Another thing...When does the wire/coil watever cuts the magnetic field..When it is vertical or horizontal  ???

it  depends

it it cuts at both but maximum cutting is whn its horizontall ( whn voltage induceed is max ) ..it exactly stops cutting whn its prefectly VERTICAL ( this is whn teh voltage induced is 0 )


 ( motor affect ) of coil
Logged
NO secrets to SUCCESS , it is the result of 1.HARD WORK 2.GOOD PREPARATION 3.LEARNING FROM FAILURE
But it ain't how hard you hit; it's about how hard you can get hit, and keep moving forward-Balboa

Offline Ivo

  • SF Geek
  • ****
  • Posts: 515
  • Reputation: 2767
Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #2008 on: May 26, 2010, 03:56:34 pm »
Quote from: Adzel on May 26, 2010, 03:55:10 pm
A ( attract  attract )...Im very sure!  ;)

Beware, it says steel...
Logged
Always willing to help!  8)
"In helping others, we shall help ourselves, for whatever good we give out completes the circle and comes back to us."

Offline NidZ- Hero

  • People say i m borderline crazy Sorta kinda :D
  • SF Senior Citizen
  • *****
  • Posts: 958
  • Reputation: 21263
  • Gender: Female
  • IDK what makes u such a LOSER.But it really works
Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #2009 on: May 26, 2010, 03:56:50 pm »
an induced current always flow in de direction such that it opppose the change which produced it this de is de law


explanation
if a magnet is moved in or out of a coil a current is induced in de coil lke if de induced current turns the coil into a weak electromagnet whose N pole opposses de approachin N pole of de magnet when de magnet is induced is pulled out of de coil the induced current alters de dirtection and de poles of de coil r reversed then de de tmme de coil attract de magnet as its pulled away. so once again de the change is opppoesd
Logged
Pages: 1 ... 132 133 [134] 135 136 ... 160   Go Up
« previous next »