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Statement- I: Higher the range, greater is the resistance of ammeter.Statement- II: To increase the range of ammeter, additional shunt needs to be used across it.

  1. A
    Statement – I is true, Statement – II is true, Statement – II is not the correct explanation of Statement–I.
  2. B
    Statement – I is true, statement – II is false.
  3. C
    Statement – I is false, Statement – II is true
  4. D
    Statement – I is true, Statement – II is true, Statement – II is the correct explanation of statement- I.

Solution & Step-by-step Explanation

1. To increase the range of an ammeter, a small resistance (shunt) is connected in parallel with the galvanometer.2. The effective resistance of the ammeter is .3. To measure a higher current (higher range), the shunt must be smaller.4. If is smaller, the total resistance of the ammeter becomes smaller.Thus, higher the range, lower is the resistance. Statement I is False. Statement II is True.

Practice this question

Try it yourself before checking the explanation above.

Statement- I: Higher the range, greater is the resistance of ammeter.Statement- II: To increase the range of ammeter, additional shunt needs to be used across it.
A
Statement – I is true, Statement – II is true, Statement – II is not the correct explanation of Statement–I.
B
Statement – I is true, statement – II is false.
C
Statement – I is false, Statement – II is true
D
Statement – I is true, Statement – II is true, Statement – II is the correct explanation of statement- I.

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ElectromagnetismCurrent ElectricityAmmeters

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