Question
It is possible to generate a 1,00,000 volt potential difference by rubbing a pocket comb with wool. Why is this voltage not dangerous when the much lower voltage provided by ordinary electric outlet is very dangerous?
Solution
Power is given by,
P= I2R
The pocket comb is an insulator with extremely high resistance. Hence, the current flowing across the comb is very small. Consequently, power is small.
P= I2R
The pocket comb is an insulator with extremely high resistance. Hence, the current flowing across the comb is very small. Consequently, power is small.
