here in this illustration, we’ll discuss about the resistance of a conductor with varying cross section. here you can see the figure shows a conductor of length l. and having a cross section which is varying. and, the radius of cross section varies linearly from, radius ay to b. and the resistivity of material given […]

# Tag: IITJEE

## 14. Class 12th Physics | Current Electricity | Experimental Verification of Ohm’s Law | Ashish Arora

let us discuss the experimental verification of ohms law. and by ohms law. we know well that current in a resistance can be directly given as v by r. and just to verify this experimentally lets have a look on the, circuit diagram which we can see here in the figure. you can see there […]

## 11. Advance Illustration | Current Electricity | Steady State Analysis of RC Circuits-3

let us analyze another r c circuit in its steady state. here we are, required to find the ratio of charges on 4 micro farad and 6 micro farad capacitor in steady state. here we know steady state no current flows through, any capacitor. so here we just have a look if. there is any […]

## 20. Class 12 Physics | Current Electricity | Potential Difference Across Battery Terminals

let us discuss the, potential difference across the battery terminals in a circuit in various situations. lets discuss it, in 3 cases. case 1 is a situation. when. no current flows. through the battery. in this situation say if, we are given with a battery a real battery in which its e m f is […]

## 16. Advance Illustration | Current Electricity | Convection Current due to Motion of a Wire

in this illustration we’ll discuss about the convection current due to motion of a wire, and this is saying. a long cylindrical wire of radius, ay and it is uniformly charged. and this wire starts moving along the length at speed v. we are required to find the convection current due to physical flow of […]

## 19. Advance Illustration | Current Electricity | Equivalent Resistance of an Infinite Grid

in this illustration we’ll demonstrate you how to calculate the equivalent resistance of an infinite grid. here the figure shows an infinite wire grid with square cells, and the resistance of each wire between neighboring junction is r. and here we are required to find the equivalent resistance of the grid across these 2 points, […]

## 18. Class 12th Physics | Current Electricity | Electromotive Force (EMF) | by Ashish Arora

let us study about electromotive force. this is term which is also abbreviated as e m f. and now onward we are going to use the term e m f, very frequently, in this chapter, as well as in the, coming topics. about e m f we can write that. any devices. which can. continuously. […]

## 1. Physics | Current Electricity | Resistance of a Conductor with Varying Cross-Section | (GA)

here in this illustration, we’ll discuss about the resistance of a conductor with varying cross section. here you can see the figure shows a conductor of length l. and having a cross section which is varying. and, the radius of cross section varies linearly from, radius ay to b. and the resistivity of material given […]

## 4. Advance Illustration | Current Electricity | Analyzing Electrical Circuit Using KCL and KVL-2

in this illustration again we analyze electrical circuit using k c l and k v l. here we are required to find, the current in 8 ohm resistance in the circuit shown in figure. here again we use kirchhoff’s current law to calculate. the current in 8 ohm resistance for which we need to first […]

## 14. Advance Illustration | Current Electricity | Evaporation of a Conductor | Ashish Arora

in this illustration we’ll, demonstrate, about a phenomena in which, evaporation of a conductor takes place. here the situation says, due to current flowing through a conductor across a voltage source is temperature increases. and its surface molecules evaporate. we are required to find the percentage decrease in conductor diameter, if to maintain the temperature […]