The three basic electrical quantities are: Voltage, Current, and Resistance. Voltage is measured in terms of volts and its variations.

## What is electrical quantity?

The international standard units, Système international d’unités (SI units), that are commonly used for electrical quantities include **coulombs, amperes, volts, ohms, watts and joules**.

## What are the basic electrical terms?

Basic electrical concepts and terms – **current, voltage, resistance, power, charge, efficiency**.

## What are the 3 basic types of electrical circuits?

There are three basic types of circuits: **series, parallel, and series-parallel**. The type of circuit is determined by how the power source, conductors, loads, and control or protective devices are connected. A series circuit is the simplest circuit.

## What is the voltage and current?

Current is **the rate at which electric charge flows past a point in a circuit**. In other words, current is the rate of flow of electric charge. Voltage, also called electromotive force, is the potential difference in charge between two points in an electrical field. … Current is the effect (voltage being the cause).

## What are the 3 types of power supply?

There are three subsets of regulated power supplies: **linear, switched, and battery-based**. Of the three basic regulated power supply designs, linear is the least complicated system, but switched and battery power have their advantages.

## What does R mean in electrical terms?

where I is the current through the conductor in units of amperes, V is the voltage measured across the conductor in units of volts, and R is **the resistance of the conductor in units of ohms**.

## What are the basic electrical Questions?

**Basic Electrical interview Questions & Answers paper-1**

- What is electricity ? …
- What are the types of electricity ? …
- What is static electricity ? …
- What is current electricity ? …
- What are the types of current electricity ? …
- What are the different methods of producing electricity ? …
- What are the sources of electricity ?

## What is basic electrical knowledge?

In order to make sense of the Code, you must first understand basic electrical concepts such as **voltage, amperage, resistance, Ohm’s law, wattage, circuit theory** and others. … An obvious foundation for all electrical installations is a thorough knowledge of the laws that govern the operation of electricity.

## What are the 2 types of currents?

There are two kinds of current electricity: **direct current (DC) and alternating current (AC)**. With direct current, electrons move in one direction. Batteries produce direct current. In alternating current, electrons flow in both directions.

## Which allow electricity to pass through them?

Materials that allow electricity to pass through them are called **conductors**. Copper wire is a good conductor. Materials that do not allow electricity to pass through them are called insulators. Plastic is a good insulator.

## What is the difference between electricity and current?

Electricity is the form of energy and produced by the flow of electrons whereas current is **combination of flow of charge per unit time**. Current is the quantity of the electrical energy. Electricity can refer to static electricity, stationary or moving charges.

## Why current is low when voltage is high?

High voltage transmission minimizes the amount of power lost as electricity flows from one location to the next. … **The higher the voltage**, the lower the current. The lower the current, the lower the resistance losses in the conductors. And when resistance losses are low, energy losses are low also.

## Is potential difference voltage?

Potential difference is **the difference in the amount of energy that charge carriers have between two points in a circuit**. **Measured in Volts: **Potential difference (p.d.) is measured in volts (V) and is also called voltage.