Question

CBSE define good conductor of electricity ?why is Rod used to heat water and game

Answer 1

the substance which allows electricity to pass through it is called good conductor of electricity..
Rod are used to heat water coz they r good conductor and one more reason that they r coiled so that it produces lots of heat.

hope this helps

Answer 2

conductors are those substances which conducts electricity (range-10`4 to 10`7 S/cm)
rod is used because it is a good conductor of heat and electricity