JEE Main Current Electricity Revision Notes

JEE Main Current Electricity Revision Notes - PDF Download

The definition of electric current is the rate of flow of electric charge over any plane of a wire. This flow of charge is also referred to as the electric current flowing through a wire.

I = Electric current = q / t

A = SI unit of electric current is Ampere. 

The electric current’s conventional direction is the course of motion of positive charge.

Consider that a charge (q) rotates in a loop having a frequency (f), 

Then the equivalent current, i = q * f

JEE Main Current Electricity Revision Notes part-1
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Q1. What do you Mean by Superconductors?

Ans: We can call a material as a superconductor when we recognize that a set of physical properties are found in this material where electrical resistance disappears, and magnetic flux fields are excluded from the material. Any material exhibiting these properties is a superconductor.

Q2. Define the Meissner Effect and State who Discovered it?

Ans: Meissner effect can be explained as the dismissal of the magnetic field a super-conductor when it has its transformation to the higher end of the superconducting stage. It was discovered by Walther Meissner and Robert Ochsenfeld in 1933.

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