Question

Which of the following energy conversions take place in an electric torch?

• A.
  $Electrical\to Chemical\to Light$
• B.
  $Chemical\to Electrical\to Light$
• C.
  $Electrical\to Light\to Chemical$
• D.
  $Light\to Chemical\to Electrical$

Answer 1

The correct option is B

$Chemical\to Electrical\to Light$
A torch consists of electric cells, a bulb, a switch, and conducting wires. These all components when connected together form an electric circuit of the torch. When we switch on the torch, the circuit is closed and the current flows which in turn lights up the bulb. During this process, the electric cells convert the chemical energy stored inside them to the electrical energy and then the bulb converts the electrical energy into the light energy.