What is electric current
Answers
Answer:
An electric current is a stream of charged particles, such as electrons or ions, moving through an electrical conductor or space. It is measured as the net rate of flow of electric charge past a region.[1]:2[2]:622 The moving particles are called charge carriers, which may be one of several types of particles, depending on the conductor. In electric circuits the charge carriers are often electrons moving through a wire. In semiconductors they can be electrons or holes. In an electrolyte the charge carriers are ions, while in plasma, an ionized gas, electric current is formed by both electrons and ions.[3]
Electric current
Ohm's Law with Voltage source TeX.svg
A simple electric circuit, where current is represented by the letter i. The relationship between the voltage (V), resistance (R), and current (I) is V=IR; this is known as Ohm's law.
Common symbols
I
SI unit
ampere
Derivations from
other quantities
{\displaystyle I={V \over R},I={Q \over t}}{\displaystyle I={V \over R},I={Q \over t}}
Dimension
{\displaystyle {\mathsf {I}}}{\displaystyle {\mathsf {I}}}
The SI unit of electric current is the ampere, or amp, which is the flow of electric charge across a surface at the rate of one coulomb per second. The ampere (symbol: A) is an SI base unit[4]:15 Electric current is measured using a device called an ammeter.[2]:788
Electric currents create magnetic fields, which are used in motors, generators, inductors, and transformers. In ordinary conductors, they cause Joule heating, which creates light in incandescent light bulbs. Time-varying currents emit electromagnetic waves, which are used in telecommunications to broadcast information.
Answer:
An electric current is a stream of change particles such as electron or ions, moving through an electrical conductor or space. The SI unit of electric current is the ampere or amp......
Explanation:
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