Heat is generated continuously in an electric heater but the temperature of its element becomes constant after some time. Why?

The heating element of an electric heater is a resistor. According to Joule’s law of heating, the amount of heat produced by it is proportional to its resistance. H = I2Rt The...

Law of conservation of momentum is applicable to isolated system (no external force is applied). In this case, the change in velocity is due to the gravitational force of earth.

The cord of the electric heater is made of copper. It does not glow because negligible heat is produced in it by the passing current due to its extremely low...

Nichrome, due to its high resistivity.

The resistance of a heater coil is less than that of electric bulb filament. When heater is switched on in parallel, more current start flowing through the heater coil and...

The electric power P is given by P=l2R The resistance of the heating element is very high. A large amount of heat generates in the heating element and it glows hot. The...

Sir/ mam why did we use V2/R ...can't we use I2R here??

(d) : It does not violate first law of thermodynamics but violates second law of thermodynamics.

(b) must be unsaturated 

(d) The torque on the dipole due to the field may be zero.