Electric Circuits
When resistance element of a heater fuses and then we reconnect it after removing a portion of it, the power of heater will

  remain constant.
  decrease.
  increase.
  none of these.

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Electric Circuits
Atoms have no electric charge because they

 have an equal number of electrons and protons.
 have an equal number of charged and non charged particles.
 have neutrons in their nuclei.
 have an equal number of neutrons and protons.

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