Question

The current passing through an electric kettle has been doubled. The heat produced will become
(a) half
(b) double
(c) four time
(d) one-fourth; The current passing through an electric kettle has been doubled. The heat produced will become
(a) half
(b) double
(c) four time
(d) one-fourth

Answer 1

The heat produced will become (b) doubled.  

Explanation:

• When the current passes via the electric kettle, it will get doubled. Then, the produced heat will get four times.  

       So,  $H=I^{2} R t.$

• It is to be noted that the heat formed is directly proportional to the current’s square.
• Heat is produced when current is sent via a resistor. This results in making a hot resistor.  
• Thus, the quantity of heat produced in a resistor is proportional to the current’s square passing via it in a time t.