Question

Choose the incorrect option ? 

(a) A bulb in an electric circuits glows due to heating effect of current. 

(b) Tin cans, used for storing food are made by electroplating tin on to iron 

(c) When the cells are connected in series, the resultant voltage is equal to sum of the individual voltage of the cells 

(d) None of these

Answer 1

(d) None of these.

(a) Due to the heating effect of current, the filament of the bulb gets heated to a high temp and it starts glowing. 

(b) Tin being less reactive than iron is used for containerisation of food items. 

(c) When cells are connected in series, the resultant voltage is the sum of the individual voltage of the cells.