The working of an analogue type electric power meter is based on
Important Questions on Electromagnetic Induction
Vandana was a student of Class 12th Science. She went to visit a science centre with her friends. There, she saw a magnet oscillating through a string. She observed that oscillation stops when a metal plate is kept under the oscillating magnet. She could not understand the reason. She discussed with her friends that oscillation will continue or stop when the magnet is kept under the oscillating metal plate. The next day, they went to their science teacher and became happy to know the reason for the phenomenon.
Write two properties of current produced in the metal plate. How we can reduce this current? Write.
Vandana was a student of Class 12th Science. She went to visit a science centre with her friends. There, she saw a magnet oscillating through a string. She observed that oscillation stops when a metal plate is kept under the oscillating magnet. She could not understand the reason. She discussed with her friends that oscillation will continue or stop when the magnet is kept under the oscillating metal plate. The next day, they went to their science teacher and became happy to know the reason for the phenomenon.
Write two values each shown by the teacher and Vandana.
Assertion and the other is labelled as Reason
Assertion : A bar magnet dropped through a metallic cylindrical pipe takes more time to come down compared to a non-magnetic bar with same geometry and mass.
Reason : For the magnetic bar, Eddy currents are produced in the metallic pipe which oppose the motion of the magnetic bar.
In the light of the above statements, choose the correct answer from the options given below
Vandana was a student of Class 12th Science. She went to visit a science centre with her friends. There, she saw a magnet oscillating through a string. She observed that oscillation stops when a metal plate is kept under the oscillating magnet. She could not understand the reason. She discussed with her friends that oscillation will continue or stop when the magnet is kept under the oscillating metal plate. The next day, they went to their science teacher and became happy to know the reason for the phenomenon.
Why oscillation stops when a metal plate is kept under the oscillating magnet? Give suitable reason.
Describe the ways in which Eddy currents are used to advantage.
Spherical insulating ball and a spherical metallic ball of same size and mass are dropped from the same height. Choose the correct statement out of the following {Assume negligible air friction}
