To solve the question : an electric bulb is rated 220 v and 100 w. When it's operated on 110 v, the power consumed will be ______, the formula P = V^2/R is used, why can't the formula P = VI be used ?
To solve the question : an electric bulb is rated 220 v and 100 w. When it's operated on 110 v, the power consumed will be ______, the formula P = V^2/R is used, why can't the formula P = VI be used ?