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Monday, 26 June 2017

What is Current ? Type of Current ? - Hindi / English

What is Current ? Type of Current ? - Hindi / English 

Current करंट

चालक में होने वाले इलेक्ट्रान के प्रभाव को ही विद्युत् धारा कहा जाता है इलेक्ट्रान गति करते हुए चालक के एक सिरे से दुसरे सिरे की और गति करने लगता है  चालक के अंदर इलेक्ट्रान के इसी प्रभाव को विद्युत् धारा या करंट कहेते है 

What is current?

Current is the rate at which electrons flow past a point in a complete electrical circuit. At its most basic, current = flow.
An ampere (AM-pir), or amp, is the international unit used for measuring current. It expresses the quantity of electrons (sometimes called “electrical charge”) flowing past a point in a circuit over a given time.
A current of 1 ampere means that 1 coulomb of electrons—that’s 6.24 billion billion (6.24 x 1018) electrons—is moving past a single point in a circuit in 1 second. The calculation is similar to measuring water flow: how many gallons pass a single point in a pipe in 1 minute (gallons per minute, or GPM).

     Symbols used for amps:
  • ·         A = amperes, for a large amount of current (1.000). 
  • ·         mA = milliamperes, a thousandth of an amp (0.001). 
  • ·         µA = microamperes, a millionth of an amp (0.000001).

In formulas such as Ohm’s Law, current is also represented by I (for intensity).

Type of current 

AC Current 

DC Current 
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