Physics Chapter on Ammeter and Galvanometer
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Questions and Answers

What is the purpose of connecting a resistance in series with a galvanometer when converting it to an ammeter?

  • To increase the sensitivity of the galvanometer
  • To protect the galvanometer from low currents
  • To increase the effective current capacity of the galvanometer (correct)
  • To decrease the effective resistance of the galvanometer

    • Which of the following statements accurately describes the function of a shunt in an ammeter?

  • It diverts a portion of the current away from the galvanometer (correct)
  • It completely isolates the galvanometer from the circuit
  • It allows all current to flow through the galvanometer
  • It increases the resistance of the galvanometer

    • In an ideal ammeter, what should its effective resistance be?

  • High resistance to limit current flow
  • Infinite resistance to prevent current
  • Variable resistance for different current levels
  • Zero resistance (correct)

    • What is the relationship between the total current (I) and the current through the galvanometer (Ig) when a shunt is used?

    <p>I is n times Ig, where n is the ratio of total to galvanometer current</p> Signup and view all the answers

    How does the shunt affect the range of an ammeter?

    <p>It increases the range of the ammeter</p> Signup and view all the answers

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