Lenz’s law , Physics

Assignment Help:

LENZ’S LAW 

2256_lenz law.png

A change of flux in a closed circuit induces an emf and sets up a current.  The direction of this current is such that its magnetic field tends to oppose the change of flux.  See diagram below.

 

The direction of the induced emf as given by Lenz's Law may be shown in our equation by introducing a negative sign, but remember that the negative sign is vectorial and not arithmetic.

Hence, 2278_lenz law1.png

This formula is not strictly correct. A conductor must cut 108 lines of flux per second in order to induce 1 volt.  That is the flux must be changing at a rate of 108 lines per second.  The formula should therefore be written as:

2272_lenz law2.png

 


Related Discussions:- Lenz’s law

If the ray is a principal ray where does it go from there, Portrayed is a r...

Portrayed is a ray from an object which heads toward and then into a lens. Suppose if the ray is a principal ray where does it go from there? Ans: This is the simple p

Explain core losses or iron losses, Core losses or Iron losses: These loss...

Core losses or Iron losses: These losses having of hysteresis and eddy current losses, which happen due to pulsation of flux in the core. These losses depend upon the maximum flux

Describe dispersive power, Write down the expression for deviation produced...

Write down the expression for deviation produced by a thin prism also describe dispersive power.

Force in two and three dimensions - pressure and fluids, Force in Two and T...

Force in Two and Three Dimensions - Pressure and Fluids Pressure is a force exerted over an area and is measured in Pascals (Pa). P (in Pa) = Force (in newtons) / area (

What are the characteristics of dead stars, What are the characteristics of...

What are the characteristics of dead stars? Dead stars are generally cold balls of material in empty space. A teaspoonful of white dwarf matter would weigh as more as an Ele

As cph is a boson, As CPH is a boson, does it has structure? Answer; a ...

As CPH is a boson, does it has structure? Answer; a CPH is tiny energy and it is not a boson. When a CPH takes spin, then it converts to graviton.

Motion in one dimension, A tortoise can run with a speed of 0.12 m/s, and a...

A tortoise can run with a speed of 0.12 m/s, and a hare can run 20 times as fast. In a race, they both start at the same time, but the hare stops to rest for 4.0 minutes. The torto

Discuss the mechanism of cationic polymerization, How is hardness of water ...

How is hardness of water sample estimated through EDTA titration? Discuss the mechanism of cationic polymerization

What is equipotential surface, What is Equipotential Surface Equipoten...

What is Equipotential Surface Equipotential Surface - surface of constant potential.  No work is required in moving charges with such a surface. Electric fields are perpend

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd