When electricity passes through a bulb, it gives off :1. Sound 2. Light 3. Electricity 4. Heat Choose the correct option from the codes given below :

Options

A. 1 and 2
B. 2 only
C. 2 and 3
D. 2 and 4

Answer

option 4

Explanation

A bulb has two terminals marked positive and negative. When the two terminals of the a cell are connected to the two terminals of, the bulb by using wires, the electric current passes through the filament of the bulb and it starts glowing . When electricity from the cell passes through the filament of the bulb the filament gets heated too much. The filament becomes white hot and starts giving light.