Fleming's right hand rule gives

Options

A. the magnitude of the induced emf
B. the magnitude of the magnetic field
C. the direction of the induced emf
D. both magnitude and direction of the in duced emf

Answer

**Step-by-Step Solution:**

1. **Understanding Fleming's Right Hand Rule**:
- Fleming's right hand rule is a mnemonic used to determine the direction of induced current when a conductor moves in a magnetic field.

2. **Positioning the Fingers**:
- To apply the rule, extend your right hand.
- Position your thumb, index finger, and middle finger so that they are mutually perpendicular to each other, forming a 90-degree angle.

3. **Identifying Directions**:
- Point your thumb in the direction of the motion of the conductor (the direction in which the conductor is moving).
- Point your index finger in the direction of the magnetic field (from north to south).

4. **Determining Induced Current**:
- Your middle finger will then point in the direction of the induced current. This indicates the direction of the current that is generated due to the motion of the conductor in the magnetic field.

5. **Conclusion**:
- Therefore, Fleming's right hand rule specifically gives the direction of the induced current when a conductor moves through a magnetic field.

6. **Evaluating the Options**:
- The options provided in the question can be evaluated:
- **Magnitude of the induced EMF**: Incorrect, as the rule does not provide magnitude.
- **Magnitude of the magnetic field**: Incorrect, as the rule does not provide magnitude.
- **Direction of the induced EMF**: Correct, as the rule indicates the direction of the induced current which is related to the induced EMF.
- **Both magnitude and direction of the induced EMF**: Incorrect, as the rule does not provide magnitude.

7. **Final Answer**:
- The correct answer is that Fleming's right hand rule gives the direction of the induced EMF.

---