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.
The resistances of commercially-available discrete resistors are restricted to particular sets. For example, the available values of resistors with 10% tolerance are selections fro
what about capacitor with dielectric & air electric & electrolytic capacitor
Q. State the law of conservation of electric charges? The entirety charge in an isolated system always remains constant. For instance Uranium ( 92 U 238 ) can decay by emittin
Explain how suppressor grid eliminates effect of secondary emission in pentode Ans: Suppressor grid is placed in between plate and screen grid. It's connected with the cathode
Inductance is the circuit parameter to describe an inductor. It is an effect which results from the magnetic field that forms around a current carrying conductor. Inductance is sym
how to measure least count of the instruments?
A hollow METALLIC sphere has an inner radius A and an outer radius B. If charge is placed on the inner surface, that is at radius A, where is the charge located after it has c
State of Motion: Inertia is the tendency of an object to resist alters in its state of motion. State of motion of an object is described by its velocity - speed with a direc
Two cars head out in the similar direction. Car A starts 1.0 min before car B. The position-time graphs for both cars are shown in the accompanying figure. a. How far apa
A solid cylinder of radius 12.1cm and mass 20.2kg starts from rest and rolls without slipping a distance of 6.14m down the house roof that is inclined at 25.3° relative to the hori
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