- Messages
- 289
- Reaction score
- 219
- Points
- 43
oohh .... thnx guysThe molecules can't rise at D, there's no place for them to go up.
At C they go up the tube.
We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
Click here to Donate Now (View Announcement)
oohh .... thnx guysThe molecules can't rise at D, there's no place for them to go up.
At C they go up the tube.
Umm which question guys?
That is one of the easiest questions in the history of questions
It's ok Happens with everyone Like i forgot what was radiation yesterdayIt was a pretty straight forward answer.. I just didn't think of it x)
It's ok Happens with everyone Like i forgot what was radiation yesterday
it is 4 u, but not for all. not evry1 here is a genius lyk u, includin myself!That is one of the easiest questions in the history of questions
In an AC generator, MOTION in a MAGNETIC FIELD (due to rotation of the coil) produces CURRENT!Hahaa, I've got a quick question. Could you explain the difference between an AC generator and a DC motor. (Other then the fact ones AC and the others DC :S )
I never said i am a genius Besides, i said it happens with everyone In my prems exam, i forgot what were the fleming rulesit is 4 u, but not for all. not evry1 here is a genius lyk u, includin myself!
In an AC generator, MOTION in a MAGNETIC FIELD (due to rotation of the coil) produces CURRENT!
In a DC motor, CURRENT (probably DC) in a MAGNETIC FIELD produces MOTION!
Hope you got me That's the basic difference... i could say more if you want me to
Anddd how to magnetise/demagnetise a magnet using a coil and different forms of current (AC/DC)
To magnetize:
1) The stroking method:
You take a magnet and the metal you want to magnetize and stroke the magnet on it until it becomes a magnet
2) This is the better method: Electrical method:
You place the metal you want to magnetize in a solenoid and then pass a large DC current through it!
To demagnetize:
The most effective method is:
Place the magnet in a solenoid. Then SLOWLY WITHDRAW the magnet from the solenoid AS a large Ac current is passing through it!
magnetise usin dc, n keep da magnet inside da coil. demagnetise by usin ac, n take da magnet out.Anddd how to magnetise/demagnetise a magnet using a coil and different forms of current (AC/DC)
LOL! i ws jst kiddin.I never said i am a genius Besides, i said it happens with everyone In my prems exam, i forgot what were the fleming rules
Yeah i noticed my mistake and corrected itThere are 2 resistors in the circuit (when the switch is in position A) the 22 ohms and the 2 ohms! Both are connected in series so the total resistance will be:
Rt = R1 + R2 = 22 + 2 = 24 ohms
ii)
Total resistance = (R1*R2)/(R1+R2)
R1 is 22 + 2 = 24 ohms
R2 is 8 ohms
We use this formula because they are in parallel:
=(8*24)/(8+24)
= 6 ohms
-------------------
i think this ans. is wrong ... in the ms i-2 and ii- 24
it is da wire dat carries da current to da appliancesorry but i have a question which i always forget ...... what's a live wire?
For almost 10 years, the site XtremePapers has been trying very hard to serve its users.
However, we are now struggling to cover its operational costs due to unforeseen circumstances. If we helped you in any way, kindly contribute and be the part of this effort. No act of kindness, no matter how small, is ever wasted.
Click here to Donate Now