Recent content by Kaushik

I do not understand why that is the case. Is there any intuitive explanation for it? Thanks

This was the answer key provided: My questions are the following: if the force required for rotational equilibrium is more than the limiting static friction, then the body will rotate aka slip over the surface. When it slips, the frictional force will be kinetic and not static, right? If I...

I'll share my understanding of it in DC voltage and a AC (but square wave). When we apply a voltage, the battery tries to send a current. But, when this current begins to flow through the inductor, there is a sudden increase in magnetic flux through the coil (self-induction). Due, to this...

Yes!

Consider a purely inductive circuit with an inductor of self-inductance ##L## and sinusoidally varying AC source of peak voltage ##V_{m}##. First of all, Why is ##V_{ac} = ε_{ind}## (where ##ε_{ind}## is the back emf)? Now, at ## t=0 ##, voltage is increasing at a fast rate. Hence, due to the...

You use the word capacitor voltage here. I have a doubt related to this (might be silly but please excuse me). Consider a circuit with a battery, say ##12 V##, a capacitor and a switch. As soon as we close the switch current starts to flow and this is because of the ##12V## potential difference...

Consider a circuit with a witch, capacitor and an AC voltage source. The sinusoidal AC voltage source is depicted in the following graph: We know that, ##Q = CV## ##\frac{dQ}{dt} = C \frac{dV}{dt}## ##i = C\frac{dV}{dt} \tag{1}## So from the graph, the voltage increases rapidly around ## t =...

When the potential difference between capacitor 1 and capacitor 2 become equal?

First when it is connected to the battery, the capacitors start accumulating charges such that the potential difference equals that of the battery. Then the current stops flowing. ##Q_1 = CV## ##Q_2 = nCV## Where 1 and 2 represent the capacitor with capacitance C and nC respectively Then, when...

Now, what happens if we connect a battery to a wire with 0 resistance (which is not what happens in reality)? In the case of wire with resistance, as you said, the thermal energy of the positive ions that constitue the resistor (here, a wire with some resistance) increases. But what about a...

Let us connect a battery of potential difference V to a wire. There is no resistance. Nothing! Now the battery creates some potential difference and the charges in the conducting wire move due to the Electric field created in the conductor by the battery. So, as the charge moves, its potential...

Thanks! I found this on the internet and it is almost the same as your explanation. Now what I don’t understand is what do they mean by bulk (in the definition of positive adsorption). Is it the adsorbent’s bulk or the solution’s bulk?

My book states the following: When the concentration of the adsorbate is less on the surface relative to its concentration in the bulk, it is called negative adsorption. I googled it and there are barely any source that talk about negative adsorption. I saw one or two videos and I believe that...

My understanding of emf Let us consider 2 parallel plates with charges (opp. but equal in magnitude) stored on it. When we connect both the plates from the outer side, the electrons from the lower potential (i.e., negatively charged plate) moves to the higher potential (positively charged plate)...

Is emf the work done to move a positive charge from LOWER potential to HIGHER potential to maintain the potential difference or else the charges move from higher potential to lower potential and will reach a point where the potential is the same between the two points and the charge will stop...