## Lenz’s law formulaThe formula for Lenz’s law are as stated below | |

Description | Formula |

Magnetic Flux | The magnetic flux through a plane of area dA placed in a uniform magnetic field B is given as ϕ=B∙dA When the surface is closed, then magnetic flux will be zero. This is due to magnetic lines of force are closed lines and free magnetic poles is not exist |

Lenz’s Law | The direction of induced emf or current in the circuit is in such a way that it opposes the cause due to which it is produced. Therefore, E = -N(dϕ/dt) |

Induced emf | Induced emf is given as E = -N((ϕ_1- ϕ_2)/t) |

Induced Current | Induced Current is given as I=E/R = N/R(dϕ/dt)= N/R((ϕ_1- ϕ_2)/t) |

Self – Induction | Change in the strength of flow of current is opposed by a characteristic of a coil is known as self-inductance. It is given as ϕ=LI Here, L = coefficient of self – inductance Magnetic flux rate of change in the coil is given as dϕ/dt = L dl/dt=-E |

Mutual – Induction | Mutual – Induction is given as
Therefore, M=(μ_0 N_1 N_2 A)/l |