(a) How much current will an electric bulb draw from a `220 V` source, if the resistance of the bulb filament is `1200 Omega` ?
(b) How much current will an electric heater draw from a `220 V` source, if the resistance of the heater coil is `100 Omega` ?

Explanation

(a)`" We are given V" = 220 V, R=1200 Omega`
From Eq. (12.6), we have the current I `= 220V//1200 Omega=0.18 A`.
(b) we are given, `V=220 V, R=100 Omega`.
Form Eq. (12.6), we have the current `I= 220 V // 100 Omega = 2.2 A`.
Note the difference of current drawn by an electric bulb and electric heater form the same 220 V source !