Electricity Formulas

Electricity Formulas

Electrical physics is the field of physics that deals with electricity, electronics, and electromagnetic ideas. Electrical formulas are extremely useful for calculating the value of a parameter in any electrical circuit. The most often used electrical formulas include voltage, current, power, resistance, and others. Understanding how the various units of electricity interact with one another may undoubtedly benefit from a water pipe system. In this example, voltage symbolises water pressure, currently indicates flow velocity, and resistance represents pipe size. Volts, amps, ohms, and watts are all important fundamental elements of electricity. Ohm’s Law states that voltage equals the current flowing in a circuit multiplied by the resistance of that circuit. Volts are the fundamental unit of measurement for voltage. The ampere is the fundamental unit of electric current in the International System of Units. It is abbreviated as “amp” or “A.”

Electricity Formulas

The passage of charge in a conductor from anode to cathode is defined as electricity. Electricity has many different applications. It serves as a power source for electrical equipment. Students may say that the movement of charge generates current, which students call electricity. To comprehend how electricity is created, they must first grasp the numerous fundamental factors associated with it, such as voltage, current, resistance, conductivity, and their relationships.

What is electricity?

Electricity and current are both linked concepts. As students all know, all charges, whether free or bound, are regarded at rest. During motion, these charges will form an electric current.

Such currents occur naturally in a wide range of real-world conditions. Lightning is one example of the phenomenon in which charges move through the atmosphere from the clouds to the earth.

Only the movement of charges causes an electric current to occur. Positive and negative charges may both go forward and backwards. Conductors are an excellent electrical medium. If an electric field is applied, an electric charge will experience force. The current is the same for all cross-sections of a non-uniform cross-section conductor.

Ohm’s Law is a fundamental law governing the flow of currents. Both resistivity and conductivity are connected concepts that may be estimated with the assistance of others.

Furthermore, the power of electricity may be simply calculated. The electromotive force, or emf, of the source, is the work done per unit charge by the source when moving the charge from a lower to a higher potential.

 Some Important Electricity Formulas are:

The Electricity formulas are the physical occurrence of the presence and movement of electric charge. To understand how electricity is created, electrons are loosely packed by the nucleus and travel freely inside the body. Because they are negatively charged particles, when they produce multiple charges, the movement is known as electric current or electricity.

1 The Electricity Formulas  Current I = Q / t

Q = Charge

t = time taken

2 The Electricity Formulas Voltage V = E / Q or V = W / Q

E = Energy

W = Work done

3 The Electricity Formulas  Resistance R = ρl / A

ρ = Resistivity,

l = length,

A = Area


R = V / I

4 The Electricity Formulas  Power P P = VI

5 The Electricity Formulas Conductivity σ sigma = 1 / ρ

Solved Examples

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