Lenz’s law , Physics


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


Posted Date: 9/13/2012 6:01:39 AM | Location : United States

Related Discussions:- Lenz’s law , Assignment Help, Ask Question on Lenz’s law , Get Answer, Expert's Help, Lenz’s law Discussions

Write discussion on Lenz’s law
Your posts are moderated
Related Questions
SMALL ALKALINE CELLS: Hermetically sealed Ni-Cad cells are produced in the same size and shape as their primary counterparts. They are small, portable and maintenance free, but

Aiming at the Monkey Slow Assume a zookeeper must shoot a banana from banana cannon to a monkey who hangs from the limb of a tree. This particular monkey has a habit of droppin

Define Heat engine Heat engine is a device by which a system is made to undergo a cyclic process that results in conversion of heat into work. It is explained as the ratio o

Can ever the whole charge of a body be transferred

(a). Modulus of elasticity and modulus of rigidity are important parameters to measure mechanical properties of materials. With the aid of drawings, explain these parameters and gi

The rate of modification of thermo emf with the change in the temperature of the hot junction is known as thermoelectric power.

When does the Total mechanical energy remain constant?

Unit of Charges: The S.I unit of charge is Coulumb represented by "c".

write bernoulli,s equation using pressure,energy,and heads.

PROJECTILE: "When a body is thrown upward making a particular angle 'Q' with the horizontal and moves freely under the action of gravity, it is known as a projectile". EXAMP