## 1. Advance Illustration | Current Electricity | Resistance of a Conductor with Varying Cross-Section

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 […]

## 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 […]

## 1. Class 12th Physics | Current Electricity | Electric Current | by Ashish Arora

dear students lets start with the topic of electric current. and, in your early classes you might have studied about the basic definition of current in which, we write that. rate of flow of charge. through. any cross section. of a conductor. in which current is flowing obviously we are talking about. is called. electric […]

## 12. Class 12 Physics | Current Electricity | Circuit Symbol of a Resistance & Equations of Ohm’s Law

let us discuss about circuit symbol of resistance and equation of ohms law. i hope all of you aware about that in. electrical circuit, resistance is represented by a zigzag line. say if there are 2 terminals ay and b. across which resistance r is connected. and say if, at terminal ay potential is v-a […]

## 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 […]