MCQ
Direction: Observe the given figure and answer the following question.
The bulb will glow when a _________ is placed in between the probes.
  • A
    Crayon.
  • B
    Comb.
  • Key.
  • D
    Piece of stone.

Answer

Correct option: C.
Key.

Key is a metallic object. When it is placed in between probes then current can easily flow in the circuit.

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