Basic Electrical Concepts

Welcome to the Basic Electrical section. Here, you will learn about fundamental concepts in electrical engineering, including Ohm's Law, Kirchhoff's laws, series and parallel circuits, and more.

This page is designed to help you master the foundational principles required for the SSC JE exam and other competitive exams.

Topics Covered:

Charge

**Charge** is a fundamental property of matter that causes it to experience a force in an electric field. It can be **positive** or **negative**.

  • SI Unit: **Coulomb (C)**
  • Types: Positive Charge (+) and Negative Charge (-)

**Formula**: Charge (Q) = Current (I) × Time (t)

Current

**Current** is the rate of flow of electric charge through a conductor. It is the movement of electrons.

  • SI Unit: **Ampere (A)**
  • Types: Direct Current (DC) and Alternating Current (AC)

**Formula**: Current (I) = Charge (Q) / Time (t)

Voltage

**Voltage** is the potential difference between two points in an electric circuit. It drives the current through the circuit.

  • SI Unit: **Volt (V)**

**Formula**: Voltage (V) = Work Done (W) / Charge (Q)

Electric Field

Electric Field is a region around a charged particle where a force is experienced by another charge.

  • SI Unit: **Newton per Coulomb (N/C)** or **Volt per Meter (V/m)**

**Formula**: Electric Field (E) = Force (F) / Charge (Q)

Power

**Power** is the rate at which electrical energy is transferred or consumed in a circuit.

  • SI Unit: **Watt (W)**

**Formula**: Power (P) = Voltage (V) × Current (I)

Alternate Formulas:

  • P = I² × R (using Ohm's Law)
  • P = V² / R (using Ohm's Law)

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