What is magnetic induction?

Magnetic induction (B) measures the strength of a magnetic field  specifically, the force per unit current per unit length on a conductor in the field.

• Symbol: B | Unit: Tesla (T)
• Vector quantity.
• Formula: B = F / (IL)
• Earth's magnetic induction: ~25–65 microtesla.

Applications: MRI machines (1.5–3 T), electromagnets, electric motors.

Magnetic induction (B) is the magnetic flux density measured in Tesla, quantifying the force a magnetic field exerts on charges and currents.