the magnetic equivalent of ohm's law is ..

Ohm's law:

E = IR where E is the EMF, I is the current and R the resistance.

<a href="https://en.wikipedia.org/wiki/Magnetic_circuit#Hopkinson.27s_law:_the_magnetic_analogy_to_Ohm.27s_law" target="_blank" rel="nofollow noopener noreferrer">Magnetic Circuit Hopkinson.27S Law: The Magnetic Analogy To Ohm.27S Law</a>

F = ΦR[sub]m[/sub] where F is the MMF, Φ is the magnetic flux and R[sub]m[/sub] the magnetic reluctance

Just as Ohm's law relates the EMF across an element in a circuit to the current flowing through that element, Hopkinson's law relates the MMF (MagnetoMotive Force) across a magnetic element in a circuit to the magnetic flux through that element. The constant corresponding to electrical resistance in Ohm's law, is magnetic reluctance in Hopkinson's law..

silverscorpion

Ohm's law:

E = IR where E is the EMF, I is the current and R the resistance.

<a href="https://en.wikipedia.org/wiki/Magnetic_circuit#Hopkinson.27s_law:_the_magnetic_analogy_to_Ohm.27s_law" target="_blank" rel="nofollow noopener noreferrer">Magnetic Circuit Hopkinson.27S Law: The Magnetic Analogy To Ohm.27S Law</a>

F = ΦR[sub]m[/sub] where F is the MMF, Φ is the magnetic flux and R[sub]m[/sub] the magnetic reluctance

Just as Ohm's law relates the EMF across an element in a circuit to the current flowing through that element, Hopkinson's law relates the MMF (MagnetoMotive Force) across a magnetic element in a circuit to the magnetic flux through that element. The constant corresponding to electrical resistance in Ohm's law, is magnetic reluctance in Hopkinson's law..

Actually this question was asked in an exam.
the options are
lens law
faradays law
rowlands law
maxwells law