Ampere is the basic unit of current in the international system of units. The symbol A is named in memory of the French physicist A. Ampere, who put forward the famous Ampere's Law in 1820.

2, the discovery of electricity-Franklin

Franklin did many experiments and put forward the concept of current for the first time. Franklin made others do many experiments, further revealing the nature of electricity and putting forward the term current.

Franklin's other great contribution to electricity was to design the famous kite experiment "Catch the electricity in the sky" by 1752, which proved that lightning in the sky and electricity on the ground are the same thing.

3. Manufacturing current-Faraday

Faraday made the first generator in the world. He found that when the first magnet passes through a closed circuit, a current will be generated in the circuit. This effect is called electromagnetic induction. It is generally believed that Faraday's law of electromagnetic induction is one of his greatest contributions.

4. The application and life of electricity

The discovery and application of electricity greatly saved human physical and mental work, made human strength grow wings and extended human information tentacles. The influence of electricity on human life has two aspects: the acquisition, conversion and transmission of energy and the basis of electronic information technology.

5, electricity and magnetism-magnets generate electricity.

1865, J.C. Maxwell of Scotland put forward the mathematical formula of electromagnetic field theory and provided the concept of displacement current. The change of magnetic field can produce electric field, and the change of electric field can produce magnetic field.

reference data

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