Biology; Chemistry; Physics: Post your doubts here!

[funky brat]

Sorr

Lol, it's okay.

 

[funky brat]

Yes Fleming one
ok
say in generator the coil is moved up the magnetic field is left to right, where is current going?

Give me the question from the past paper.
I know what is right hand rule but I never felt the need to use it.

 

[Faizan Muhammmad]

Give me the question from the past paper.
I know what is right hand rule but I never felt the need to use it.

cant find any

 

[funky brat]

cant find any

Then where do you guys use it?

 

[Faizan Muhammmad]

Then where do you guys use it?

say in generator the coil is moved up the magnetic field is left to right, where is current going?

Say this is the question what will you do?

 

[funky brat]

I haven't see any such question in the paper. I don't even think right hand rule is in our syllabus. If such question is there in the paper, of course I'll use the right hand grip rule. The current is into the paper.

 

[Faizan Muhammmad]

I haven't see any such question in the paper. I don't even think right hand rule is in our syllabus. If such question is there in the paper, of course I'll use the right hand grip rule. The current is into the paper.

your answer is correct but the grip rule is for finding the magnetic poles of solenoid
how did you do it?

 

[funky brat]

your answer is correct but the grip rule is for finding the magnetic poles of solenoid
how did you do it?

That is right hand grip rule for the poles of solenoid.
I did it using right hand rule. I know this rule but I haven't come across any paper that needs to use this rule.

 

[funky brat]

Question 1(b)iii. Do enzymes get denatured at different PH or they only become inactive? Isn't it the temperature that causes the denaturation of enzymes?
http://papers.xtremepapers.com/CIE/Cambridge International O Level/Biology (5090)/5090_w12_qp_61.pdf

 

[funky brat]

Can somebody explain the steps to making a slide of pollen grains and observing it under a microscope according to the mark scheme.

 

[Awesome12]

Question 1(b)iii. Do enzymes get denatured at different PH or they only become inactive? Isn't it the temperature that causes the denaturation of enzymes?
http://papers.xtremepapers.com/CIE/Cambridge International O Level/Biology (5090)/5090_w12_qp_61.pdf

No pH also causes the denaturation of enzymes. The marking scheme also says it

 

[sameersuleman]

Yes Fleming one
ok
say in generator the coil is moved up the magnetic field is left to right, where is current going?

the answer is out of the paper right??? because thumb is pointing upwards, 2nd finger is towardsright... so current finger is outward direction

 

[funky brat]

the answer is out of the paper right??? because thumb is pointing upwards, 2nd finger is towardsright... so current finger is outward direction

No, it's into the paper or anything.

 

[funky brat]

the answer is out of the paper right??? because thumb is pointing upwards, 2nd finger is towardsright... so current finger is outward direction

You have to use fleming's right hand rule because motion causes current to flow.

 

[Awesome12]

You have to use fleming's right hand rule because motion causes current to flow.

Do we know the type of generator?

 

[funky brat]

Do we know the type of generator?

Are you talking about this question? No, we don't.
And tell me if you can find any question in past papers that uses right hand rule, I need to clarify.

 

[Awesome12]

Are you talking about this question? No, we don't.
And tell me if you can find any question in past papers that uses right hand rule, I need to clarify.

Pick up a redspot topical and go through the MCQs of the last 2 chapters. You will find plenty

 

[funky brat]

Pick up a redspot topical and go through the MCQs of the last 2 chapters. You will find plenty

I don't have redspost topicals.

 

[Faizan Muhammmad]

That is right hand grip rule for the poles of solenoid.
I did it using right hand rule. I know this rule but I haven't come across any paper that needs to use this rule.

whatever you can do it, end of discussion

 

[DaniyalK]

I did all the MCQs of Electromagnetic Induction from redspot topical (2001-11) and haven't come across Fleming's right hand rule. Also, there are only 2 paths for light rays that we have to learn for diverging lenses, right?