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Which of the following principles is utilised in an electrodynamometer type instrument?
  • a)
    Magnitude effect
  • b)
    Force between two permanent magnets
  • c)
    Force between two current-carrying coils
  • d)
    Force between a permanent magnet and a current-carrying coil
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
Which of the following principles is utilised in an electrodynamometer...
An electrodynamometer type instrument utilizes the principle of the force between two current-carrying coils. Electrodynamometer instruments are commonly used as power factor meters or wattmeters to measure power and power factor in AC circuits.
The operation of an electrodynamometer instrument relies on the interaction between the magnetic fields produced by two current-carrying coils. When current flows through these coils, a force is generated due to the interaction between the magnetic fields.
By properly arranging and balancing the coils, the instrument can measure the magnitude and direction of the force. This force is directly proportional to the product of the currents flowing through the coils, making it possible to measure power or power factor.
Therefore, the correct answer is C: Force between two current-carrying coils.
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Which of the following principles is utilised in an electrodynamometer type instrument?a)Magnitude effectb)Force between two permanent magnetsc)Force between two current-carrying coilsd)Force between a permanent magnet and a current-carrying coilCorrect answer is option 'C'. Can you explain this answer?
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