MCQ
Pick out the wrong statement
  • A
    In a simple battery circuit, the point of lowest potential is the negative terminal of the battery
  • The resistance of an incandescent lamp is greater when the lamp is switched off
  • C
    An ordinary $100 W$ lamp has less resistance than a $60 W$ lamp
  • D
    At constant voltage, the heat developed in a uniform wire varies inversely as the length of the wire used

Answer

Correct option: B.
The resistance of an incandescent lamp is greater when the lamp is switched off
(b) As temperature increases resistance of filament also increases.

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