Electric current: Ohm’s law, resistivity

A generator is commonly responsible for producing power or electric current. These generators are like power plants. They employ the same mechanism as an electric power plant to generate the current. The physical mechanism behind the working of generators is that they convert mechanical energy into electrical energy for supplying electric current to the premises. […]

Impedance definition: A circuit’s resistance and reactance combine to present opposition to alternating current. Impedance, denoted by the letter ‘Z’, is a measurement of resistance (R) to the electrical flow. Impedance is an important concept in the study of electronics, and it is derived from the study of AC analysis. The resistance is measured in

The notion of Ohm’s Law underpins the fundamentals of electronics engineering. Current cannot flow in wires without Ohm’s Law, the voltage cannot exist without Ohm’s Law, and no circuit can function without Ohm’s Law. It’s just as significant in electronics as Newton’s Law is in physics. Of course, many other fundamental concepts and laws of

We’ve all heard of electricity. It is due to the flow of electrons. As a result, the term electricity is derived from the word electrons. A battery does not work because there is no passage of electric current if it is held up in air. As a result, you require a circuit. In layman’s terms,

A unidirectional flow of electric charge is known as a direct current (DC). The most important example of DC is an electrochemical cell. Direct current has the flexibility to flow through conductors, mainly wires. The only difference between DC and alternating current (AC) is that it flows in only one direction. Galvanic current is the

Ampere’s law in electromagnetism helps define the relativity between the electromagnetic field and electric flow. According to this law, the size of the electric flow is relative to the field generated by the electric flow itself, with a consistent proportionality equivalent to the permeability of free space.  This law permits us to keep an appropriate

If the electric current in a circuit travels back and forth, it is called an alternating current. The voltage in alternating current circuits also changes periodically. AC is used to transmit electricity at high voltages over long distances. It is more efficient as energy wastage in the form of heat is lower during this process

Impedance is the total amount of opposition to the flow of current in a circuit. Impedance works due to the actions of inductive reactance, capacitive reactance and resistance on the circuit, which combine to resist the flow of current. Ohm () is used for measuring impedance. Since the impact of capacitive reactance and inductive reactance

Conductors are defined as the materials or substances that permit electricity to pass through them. Similarly, conductors allow heat to be transmitted through them. In every conductor, an electrical charge is present. It starts moving when an electric potential difference is sent across the material’s different points. Electric current is this flow of charge that

In the case of some electrical appliances, the chemical reactions that take place in the cells on which they are powered result in a potential difference between their terminals, which causes the electrons to be propelled in their respective directions. Energy must be expanded by the source in order to maintain the current flow. Some