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Two statements are given below. Choose the option that best describes their truth values and relationship. Statement-I: The larger the current range of an ammeter, the larger its internal resistance. Statement-II: The range of an ammeter is increased by connecting an extra shunt resistance in parallel with it.

1. Statement-I is true, Statement-II is true, and Statement-II correctly explains Statement-I.
2. Statement-I is true, Statement-II is true, but Statement-II does not correctly explain Statement-I.
3. Statement-I is true, Statement-II is false.
4. Statement-I is false, Statement-II is true.

Correct answer: Statement-I is false, Statement-II is true.

Solution

Higher range is achieved by smaller shunt resistance, which reduces (not increases) the ammeter's net resistance, so Statement-I is false. Statement-II correctly describes that an extra shunt across the meter increases the range.

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