Which of the following is not correctly matched

Answer: Option B

Option B is not correctly matched because the SI unit of magnetic flux is Weber (Wb), not Tesla (T).

Tesla (T) is the SI unit of magnetic flux density (magnetic field), which is defined as the magnetic flux passing through a unit area placed perpendicular to the magnetic field.

The other pairs are correctly matched:

• Frequency → Hertz (Hz): Frequency is the number of oscillations or cycles completed in one second. Its SI unit is Hertz (Hz).

• Pressure → Pascal (Pa): Pressure is the force acting per unit area. Its SI unit is Pascal (Pa), where 1 Pa = 1 N/m².

• Electric Conductance → Siemens (S): Electric conductance measures how easily electric current flows through a conductor. Its SI unit is Siemens (S), which is the reciprocal of resistance (1 S = 1/Ω).

Therefore, Magnetic flux ⟺ Tesla is the incorrect match because the correct SI unit of magnetic flux is Weber (Wb).