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This question has Statement I and Statement II. Of the four choices given after the Statements, choose the one that best describes the two Statements. 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.
- Statement-I is true, Statement-II is false.
- Statement-I is false, Statement-II is true.
- Statement-I is true, Statement-II is true, Statement-II is the correct explanation of Statement-I.
- Statement-I is true, Statement-II is true, Statement-II is not the correct explanation of Statement-I.
Correct answer: Statement-I is false, Statement-II is true.
Solution
Statement I is incorrect because a higher range of an ammeter actually corresponds to lower resistance, allowing it to measure larger currents without damage. Statement II is correct as using a shunt resistor allows the ammeter to handle higher currents by bypassing some of the current, effectively increasing its range.
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