Recent content by harjyot

According to the theory, E= -dv/dx or E.dx = -dv So if both are positive, the potential drop should increase. But as we know, if a positive charge is placed, as the distance from it keeps on increasing, field strength starts decreasing and potential drop should increase But this is...

According to my book, if we connect a high resistance in series to the secondary cell (whose emf is to be balanced) , connect this whole apparatus to a potentiometer with an auxiliary Emf and find the null point . It's written that even after removing the Hugh resistance the null point comes...

Haha I'm sorry about the name. lets see I will sit with my book for a while and see of what you say makes sense . I'm sure it does to you .. but to me , well that's a different case altogether.

That's how I thought too but simonbridge here says that current is flowing but in the opposite direction? Simonbridge, the loop method explains it but still I' wanted a more intuitive answer to what's happening. thanks

Yep. I know kirchhoff's laws. And yes solved a few sums with mesh anaysis. Only I didn't know that the method I used had a specific name to it. Lol.

Yes. But how is the circuit getting balanced ? from what it was looking as , to me , it seemed as if the cell we want to measure (e1) Is connected in parallel to the potentiometer and by moving the slider we are finding that point where the potential e1 and v'(potential drop due to the wire)...

I'm sorry for that . I'm new to this forum and not quite well versed. My apologies. 256bits thanks for bothering so much. I appreciate it. here's the link to the original circuit diagram : http://db.tt/9pGzPz0W I'm failing to understand how the two opposite emfs are balancing each other. I...

I'm sorry but this is actually not my question. My question wasthat why do we connect the cell in the opposite way ?

Hello, I'm having a bit of a hard time understanding the concept of calculating the emf of a cell (e1) By connecting it to a potentiometer. the thing where I am getting confused is why do we connect the cell as in -++- And not -+-+. Kindly help

I'm unable to understand this generalization of vectors from a quality having a magnitude and direction, to the more mathematical approach. what is the difference between vector space and vector field? more of an intuitive example?

I am talking about what a waveform graph actually shows

I know how waves work, by the oscillation of particles along there mean position..fine I know how a simple oscillatory motion can be described by a sinusoidal wave , and what is its physical significance...okay but what I don't understand when waves (say a transverse) wave is represented by a...

in the first case, when it floats, the Bob pushes the liquid down with It's weight. so the total weight is W+weight of Bob when it sinks, the net force on Bob is upthrust + reaction force = weight. here too the weight of Bob gets added?

the force on the Bob will be weight - upthrust. by total weight I mean the weight of the whole system

I have a beaker with a liquid of density rho, and weight = W now I throw into it s Bob say, of density rho' and weight=w. can anyone explain what will be total new weight,with all forces explained for the cases: body floats. body sinks