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This questions has Statement I and State...

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 `1` is true, Statement `2`is True , Statement `2` is correct explanation for Statement `1`.

B

Statement `1` is True, Statement `2` is True, Statement `2` is NOT a correct explantion for Statement `1`.

C

Statement `1` is True, Statement `2` is False.

D

Statement `1` is False, Satement `2` is True.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze both statements regarding the ammeter and its operation. ### Step-by-Step Solution: 1. **Understanding Statement I:** - **Statement I:** "Higher the range, greater is the resistance of ammeter." - An ammeter is used to measure current, and it is designed to have a low resistance to avoid affecting the circuit it is measuring. - If the range of an ammeter increases, it means it can measure higher currents. However, to achieve this without affecting the circuit, the ammeter must be designed with a lower resistance. - Therefore, **Statement I is incorrect** because a higher range does not imply greater resistance. 2. **Understanding Statement II:** - **Statement II:** "To increase the range of ammeter, additional shunt needs to be used across it." - A shunt resistor is used in parallel with the ammeter (or galvanometer) to allow a portion of the current to bypass the ammeter. This allows the ammeter to measure higher currents without being damaged. - By adding a shunt resistor, the effective resistance of the ammeter decreases, allowing it to measure a larger current range. - Therefore, **Statement II is correct** because adding a shunt does indeed increase the range of the ammeter. 3. **Conclusion:** - Based on the analysis, we conclude that **Statement I is false** and **Statement II is true**. ### Final Answer: The correct option that describes the two statements is **D: Statement I is false and Statement II is true**. ---
To solve the question, we need to analyze both statements regarding the ammeter and its operation. ### Step-by-Step Solution: 1. **Understanding Statement I:** - **Statement I:** "Higher the range, greater is the resistance of ammeter." - An ammeter is used to measure current, and it is designed to have a low resistance to avoid affecting the circuit it is measuring. - If the range of an ammeter increases, it means it can measure higher currents. However, to achieve this without affecting the circuit, the ammeter must be designed with a lower resistance. ...
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