Electroplating is based on the ______ effect of electric current.
(a) Which effect of electric current is utilised when a thin layer of chromium metal is deposited on an iron tap? What is this process known as? (b) For electroplating copper on an iron object, which terminal of the battery (positive or negative) is connected to the iron object? Also, name the electrolyte you will use for this purpose.
An MCB which cuts off the electricity supply in case of short-circuiting or overloading works on the :
(a) chemical effect of current
(b) heating effect of current
(c) magnetic effect of current (d) electroplating effect of current
Question 8 (d) The safety device based on the heating effect of electric current is called a ___.