Description
A thin strip 10 cm long is on a U shaped wire of negligible resistance and it is connected to a spring of spring constant 0.5 Nm–1 (see figure). The assembly is kept in a uniform magnetic field of 0.1 T. If the strip is pulled from its equilibrium position and released, the number of oscillations it performs before its amplitude decreases by a factor of e is N. If the mass of the strip is 50 grams, its resistance 10Ω and air drag negligible, N will be close to
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How to prepare for IIT-JEE Physics?
To prepare for IIT-JEE Physics, focus on understanding concepts rather than memorizing formulas. Practice solving a variety of problems, especially previous years’ questions. Create a study schedule that covers all topics, with extra time for challenging areas like Mechanics and Electromagnetism. Regular revision and mock tests are essential for success.
How do you solve projectile motion problems?
To solve projectile motion problems, break the motion into horizontal and vertical components. The horizontal motion has constant velocity (ax = 0), while the vertical motion has constant acceleration due to gravity (ay = g). Use the equations of motion separately for each component, and remember that the time is the same for both components.
How does electromagnetic induction work?
Electromagnetic induction is the process of generating an electromotive force (EMF) in a conductor by changing the magnetic field through it. According to Faradays Law, the induced EMF is proportional to the rate of change of magnetic flux. This principle is the basis for generators, transformers, and inductors, which are essential components in electrical power systems.
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