Statement -1 : The sensitvity of a moving coil galvanometer is increased by placing a suitable magnetic material as a core inside the coil.
Statement - 2: Soft iron has a high magnetic permeability and cannot be easily magnetized or demagnetized.
Statement -1 : The sensitvity of a moving coil galvanometer is increased by placing a suitable magnetic material as a core inside the coil.
Statement - 2: Soft iron has a high magnetic permeability and cannot be easily magnetized or demagnetized.
Statement - 2: Soft iron has a high magnetic permeability and cannot be easily magnetized or demagnetized.
A
Statement 1 is true, Statement 2 is true, Statement 2 is a correct explanation for Statement 1.
B
Statement 1 is true, Statement 2 is true, Statement 2 is NOT a correct explanation for Statement 1.
C
Statement 1 is true, Statement 2 is false.
D
Statement 1 is false, Statement 2 is true.
Text Solution
AI Generated Solution
The correct Answer is:
To analyze the statements provided in the question, we will evaluate each statement independently and then determine the relationship between them.
### Step 1: Evaluate Statement 1
**Statement 1:** The sensitivity of a moving coil galvanometer is increased by placing a suitable magnetic material as a core inside the coil.
- A moving coil galvanometer operates on the principle of electromagnetic induction. The sensitivity of the galvanometer refers to its ability to detect small currents.
- When a suitable magnetic material, such as soft iron, is placed inside the coil, it enhances the magnetic field produced by the coil.
- This enhancement leads to an increase in the torque acting on the coil for a given current, which in turn increases the sensitivity of the galvanometer.
**Conclusion for Statement 1:** True.
### Step 2: Evaluate Statement 2
**Statement 2:** Soft iron has a high magnetic permeability and cannot be easily magnetized or demagnetized.
- Soft iron is known for its high magnetic permeability, which means it can easily become magnetized in the presence of a magnetic field.
- One of the key characteristics of soft iron is that it can be magnetized and demagnetized easily, making it suitable for applications like transformers and galvanometers.
- The statement incorrectly asserts that soft iron cannot be easily magnetized or demagnetized, which is false.
**Conclusion for Statement 2:** False.
### Step 3: Determine the Relationship Between the Statements
- Statement 1 is true, and Statement 2 is false.
- Since Statement 2 does not correctly explain Statement 1 (in fact, it contradicts the properties of soft iron), we conclude that Statement 2 is not a valid explanation for Statement 1.
### Final Conclusion
- **Statement 1 is true.**
- **Statement 2 is false.**
- Therefore, the answer is that Statement 1 is true and Statement 2 is false.
To analyze the statements provided in the question, we will evaluate each statement independently and then determine the relationship between them.
### Step 1: Evaluate Statement 1
**Statement 1:** The sensitivity of a moving coil galvanometer is increased by placing a suitable magnetic material as a core inside the coil.
- A moving coil galvanometer operates on the principle of electromagnetic induction. The sensitivity of the galvanometer refers to its ability to detect small currents.
- When a suitable magnetic material, such as soft iron, is placed inside the coil, it enhances the magnetic field produced by the coil.
- This enhancement leads to an increase in the torque acting on the coil for a given current, which in turn increases the sensitivity of the galvanometer.
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Knowledge Check
Point out the wrong statement about the magnetic properties of soft iron and steel.
Point out the wrong statement about the magnetic properties of soft iron and steel.
A
Retentivity of soft iron is more than retentivity of steel.
B
Coercivity of soft iron is less than coercivity of steel..
C
Area of B-H loop in soft iron is smaller than the area of B-H loop .for steel.
D
Area of B-H in soft iron is greater than the area of 8-H loop .for steel.