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This questions has Statement I and Statement II. Of the four choices given after the Statements, choose the one that best describes into 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.
- (a) Statement-I is true, Statement-II is true, Statement-II is the correct explanation of Statement-I.
- (b) Statement-I is true, Statement-II is true, Statement-II is not the correct explanation of Statement-I.
- (c) Statement-I is true, Statement-II is false.
- (d) Statement-I is false, Statement-II is true.
Correct answer: (a) Statement-I is true, Statement-II is true, Statement-II is the correct explanation of Statement-I.
Solution
Statement I correctly indicates that a higher range of an ammeter corresponds to greater resistance, as it must limit the current to prevent damage. Statement II explains that to extend the range, a shunt resistor is added, which allows the ammeter to handle larger currents without exceeding its limits, thus supporting the first statement.
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