Basic formulas in electronics that everyone should know

👉🏻Ohm's law 

INTRODUCTION TO OHM'S LAW

  

In 1826 Georg Simon Ohm discovered that for metallic conductors there is substantially constant ratio of the potential difference between the ends of the conductor. 

What is Ohm's Law?

This is the fundamental relationship between electric current, voltage, and resistance. It states that the current flowing through a conductor is directly proportional to the voltage applied across it, and inversely proportional to its resistance. Mathematically, it is expressed as I = V/R, where I is the current in amperes, V is the voltage in volts, and R is the resistance in ohms.

Ohm's Law equation

  

I- current

V-voltage

R- resistance

Ohm's law is explained by the following statemen

👉🏻Kirchhoff's current law

INTRODUCTION TO KIRCHHOFF'S LAW

 

Kirchhoff's laws are two equalities that deal with the conservation of energy and charge in electrical circuits. They are named after German physicist Gustav Kirchhoff, who first formulated them in the mid-19th century.

What Is Kirchhoff's Current Law?

 

This law states that the sum of the currents entering a junction in a circuit must be equal to the sum of the currents leaving that junction. Mathematically, it is expressed as the sum of all the currents entering a junction equals the sum of all the currents leaving that junction.

👉🏻Kirchhoff's voltage law

What Is Kirchhoff's Voltage Law?

 

This law states that the sum of the voltage drops in a closed loop must equal the sum of the voltage rises in that loop. Mathematically, it is expressed as the sum of all the voltage drops around a closed loop equals the sum of all the voltage rises around that loop.

👉🏻Power formula

INTRUDUCTION TO POWER FORMULA 

Power is a measure of the rate at which energy is transferred or used and is usually measured in watts (W). Voltage is a measure of the electrical potential difference between two points and is measured in volts (V). Current is a measure of the flow of electric charge and is measured in amperes (A).

what is power formula is?

The power formula is a fundamental concept in electrical engineering and is used in a variety of applications, including the design and analysis of electrical circuits, the calculation of power consumption for electrical devices, and the determination of the size and capacity of electrical power systems.

  

The power formula is a mathematical equation used to calculate the power of a circuit, device, or system. It is expressed as:

Power (P) = Voltage (V) x Current (I)

👉🏻Capacitance formula

The formula for calculating the capacitance of a capacitor is:

C = Q / V

where:

C is the capacitance, measured in Farads (F)

Q is the charge stored on the capacitor, measured in Coulombs (C)

V is the voltage across the capacitor, measured in Volts (V)

The capacitance of a capacitor is a measure of its ability to store electrical charge. The larger the capacitance, the more charge the capacitor can store. The capacitance of a capacitor depends on the properties of the materials used to make the capacitor, as well as the size and shape of the capacitor.

For example, the capacitance of a parallel plate capacitor (a simple capacitor consisting of two parallel metal plates) is given by the following formula:

C = ε0 * A / d

where:

ε0 is the permittivity of free space, a constant equal to 8.85 x 10^-12 Farad/meter.

A is the area of one of the metal plates, measured in square meters.

d is the distance between the two metal plates, measured in meters

I hope this helps! Let me know if you have any other questions.