question_answer

DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 2 We use various appliances based on heating effect of current in our daily life. Some such appliances are electric room heater, electric heater, hot plates, electric iron, hair dryers etc. All these contain a coil of wire called element. The amount of heat produced depends upon which of the following?

A) Material of element     

B) Length of wire

C) Thickness of wire        

D) all of these