Question

Statement I: An electrical heater works on the principle of heating effect of electric current.
Statement II: Copper is used as a heating element in an electrical heater.

• A.
  Statement I is correct and statement II is incorrect.​
• B.
  Statement I is incorrect and statement II is correct.​
• C.
  Both the statements are correct​.
• D.
  Both the statements are incorrect.​

Answer 1

The correct option is A

Statement I is correct and statement II is incorrect.​
An electrical heater produces heat when an electric current passes through its coil. So, the heater works on the principle of heating effect of electric current.

All appliances that produce heat are fitted with a heating element. Nichrome is used as a heating element inside the heaters.

The heat generation is greater for nichrome as compared to copper because the hindrance provided by nichrome to the flow of electric charges is greater as compared to copper. The more the hindrance to the flow of charges more will be the heat generation in the conductor.
Therefore, statement I is correct and statement II is incorrect.