Question

Which of the following statements is incorrect?

• A. Filament of an electric bulb is made of a material having high melting point.
• B. Electric cell has two terminals and electric bulb has one terminal.
• C.
  Electric cell acts as a source to initiate current flow.
• D.
  An electric cell converts chemical energy into electrical energy.

Answer 1

The correct option is B Electric cell has two terminals and electric bulb has one terminal.

• Electric current heats the bulb’s filament and the hot filament appears to glow. In order to sustain huge generation of heat in the filament, it is made up of material having high melting point.
• A cell has two terminals- positive and negative. It is the source of electric current in the circuit. The electrical energy in the circuit is converted from the chemical energy stored in the cell.
• Electric bulb has filament and the glass bulb mounted on a metallic structure. The metal base and the bottom contact are the two terminals of electric bulb.

Therefore, electric cell as well as electric bulb has two terminals.