Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
A bar magnet is overhanging vertically above a closed coil of wire. The bar magnet is unconfined. It remainder vertical as it come near the coil falls straight through the coil and then continues to fall downward, away from the coil. Does the path of the current induced to flow in the coil as a result of the motion of the magnet reverse itself as the magnet passes through the coil?
Answer:
Presume the bar magnet is initially suspended north end down. After that the magnetic field is downward inside, above and below the magnet. The magnetic field is strongest in the magnet and weaker above and below the magnet but everywhere downward. The numerous downward-directed magnetic field lines through the loop thus increases as the magnet approaches the coil is a maximum when the magnet is in the coil and decreases as the magnet falls away from the coil. For the reason that the magnetic field lines are always downward but the change in the number of downward-directed field-lines through-the-coil that is occurring itself changes from increasing to decreasing the current induced (in accordance with Faraday's Law) must reverse its direction in order for the magnetic field produced by the induced current to reverse as by Lenz's Law it should to always be in that direction which tends to keep the number of magnetic field lines downward through the coil from changing.
Now presume that the magnet is initially suspended north end up. After that the magnetic field is downward above inside and below the magnet. The argument above still putting but with the word downward replaced by the word upward everywhere that it occurs.
Note that in moreover case the direction of the current does indeed reverse itself.
Horizontally Launched Projectiles Suppose a cannonball being launched from cannon atop a extremely high cliff. Imagine as well in which the cannonball does not encounter a impo
The impression of sound heard by our ears persist in our mind for 1/10th of a second. If another sound is heard before 1/10 second is over, the impression of the two sound mixes up
What is the Static Electricity Have you ever had your hair stand on end after rubbing a balloon on your hair before a birthday party? You have probably experienced static e
Electric Field of an Oscillating Charge An electric charge is executing simple harmonic motion, and the animation displays the electric field lines around it.
what is radioactivity?
A ball with an initial momentum of 6.00 kg.m/s bounces off a wall and travels in the opposite direction with a momentum of 4.00 kg.m/s. What is the magnitude of the impulse ac
For the same leg strength / jumping technique weight affects how far one can jump. Acceleration = Force / Mass With more mass you can't accelerate yourself as much when you j
susceptibility by quink''s method
Since pure iron is limited because its high eddy current losses, by incorporating small quantities of other elements in iron good magnetic properties are obtained. The chief alloyi
what are the advantages of using the thermo-electric thermometer over the mecury glass thermometer?
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!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd