## What is Electronics, Voltage, Current, Frequency, and Power?

**What is Electronics?**

Electronics is the branch of science that deals and flow of electrons (electricity) around Protons and the study of their behavior and effects in vacuums, conductor, and semiconductors called Electronics.

__Voltage__

** **Voltage is the “pressure” of electricity/Electrons, or “electromotive force”. Unit is **Volts,** Denoted/Symbol is **V or U**, old symbol was **E.** Voltage is also commonly measured in millivolts (mV), and 1,000 mV is 1V. Microvolts (uV) and nanovolts (nV) are also used. And higher commonly measured in Kilo volts and Mega volts

1000v= 1 KV

1000v= 1 MV

__Current__

Current is the flow of electricity (electrons) in one second. No current flows between the terminals of a battery or other voltage supply unless a load is connected. Unit is **Ampere (Amps), **Symbol **is I.** current may also be measured in mA (milliamps) – 1,000 mA is 1A.

Types

**AC (Alternative Current):** It flow both direction.

**DC (Direct Current):** It flow only one direction. It has positive and Negative.

__Frequency__

The number of cycle completed in one second that is the frequency.

Unit is **Hertz**, Symbol/Denoted is **Hz/f,** old symbol was **cps (cycles per second). **

Higher Frequency:

1000 Hz = 1 KHz

1000 KHz = 1 MHz

1000 MHz = 1 GHz

** **__Power __

The consumptions of electric energy Power according to load, that measurement called Power. **Unit is Watt (W)** and Symbol/Denoted by **P**

__Ohm’s Law__

*Ohm’s Law* is the mathematical relationship among electric current, resistance, and voltage.

V=Voltage, I= Ampere, R= Resistance