WHAT ARE THE PRINCIPLES OF ELECTROMANGNETIC INDUCTION?

We all are aware of revolutionary technology – visa debit and credit cards. Now similar cards are flooding the market. We swipe our card through the card swiping machine or card reader and our transaction is done. Super cool technology! Isn’t it? But have you ever wondered what is the technology used behind it? We all might have seen a black strip at the back of the card. This is a magnetic strip which produces electromagnetic induction and card reader uses this to determine the card details. Sounds interesting?

WHAT ARE THE CONCEPTS RELATED TO AMPERE’s LAW?

The Ampere’s Law states that for a closed loop path, the sum of the length elements, times the magnetic field in the direction of the length element is equal to the permeability times the electric current enclosed in the loop.

IMPORTANT MEASUREMENTS

IMPORTANT UNITS OF MEASUREMENTS density, electric charge, electric current, force, frequency, length, mass, measurements, power, pressure, speed, stress, temperature, time, velocity.

ELECTRIC CURRENT

Electricity is nothing but electric current. Current is defined as flow or movement of charged particles through a conducting medium.