The Biot-Savart law is a fundamental law in electromagnetism that allows us to calculate the magnetic field produced by a current-carrying conductor. It is based on the principle that a magnetic field is generated around a current-carrying conductor due to the flow of electric charges.

The Biot-Savart law can be used to calculate various properties related to the magnetic field. However, there are certain quantities that cannot be directly computed using this law. One such quantity is the electric field intensity.

Electric field intensity, also known as electric field strength, is a measure of the force experienced by a charged particle in an electric field. It is defined as the force per unit charge experienced by a positive test charge placed in the field. The electric field is produced due to the presence of electric charges, not current-carrying conductors. Therefore, the Biot-Savart law, which is specifically formulated for calculating magnetic fields generated by current-carrying conductors, cannot be used to compute the electric field intensity.

On the other hand, the Biot-Savart law can be used to compute other quantities such as magnetic field intensity, magnetic flux density, and permeability.

- Magnetic field intensity: The magnetic field intensity refers to the strength of the magnetic field at a specific point. It is related to the magnetic field produced by a current-carrying conductor and can be calculated using the Biot-Savart law.
- Magnetic flux density: The magnetic flux density, also known as magnetic induction or magnetic field strength, is a measure of the magnetic field density in a given region. It can be calculated using the Biot-Savart law by integrating the contributions from all current elements.
- Permeability: Permeability is a property of materials that describes their ability to allow the passage of magnetic lines of force. It is related to the magnetic field and can be calculated using the Biot-Savart law.

In summary, the Biot-Savart law is a powerful tool for calculating magnetic fields produced by current-carrying conductors. However, it cannot be used to compute the electric field intensity, as this quantity is related to electric charges rather than current-carrying conductors.