Class 7 Chapter 14 Electric Current and its effects

Introduction

  • We often play a game called “how steady is your hand?” in this game we make an arrangement by using various electric components like electric cells, electric wires, metallic objects, electric bulbs and switches.
  • In this game, if the electric bulb glows up then we lose the game.
  • We all know that the light only glows up when the circuit is complete hence, we make sure that the circuit should not complete.
  • These electrical components have their specific symbols.
  • We use these symbols to draw a circuit and different symbols represent different electric components.
  • We use various electric components to set up the game.

 

class 7 Chapter 14 electric current and its effect