The density of magnetic filed lines indicate the strength of magnetic field. Magnetic Flux (Φ): It is a measure of the quantity of magnetism, considering the strength and extent of a magnetic field.

50 cm = 50 ÷ 100 = 0.5 m Then substitute the values into the equation: force on a conductor carrying a current = magnetic flux density × current × length force = 0.4 × 2 × 0.5 force = 0.4 N ...

To calculate the force on a wire carrying a current at right angles to a magnetic field, use the equation: force = magnetic flux density × current × length \ (F = B~I~l\) ...

At the Steady High Magnetic Field Facility (SHMFF) in China, scientists said they used a hybrid magnet to achieve a stable field of 45.22 tesla, which is the measurement of magnetic flux density.