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It is an instrument which can detect/calculate very small electric currents. It is also called as moving magnet galvanometer. It has of three circular coils of insulated copper wire wound on a vertical circular frame made of nonmagnetic material as wood or ebonite. A small size magnetic compass needle is pivoted at the centre of the vertical circular frame. These needles go freely in a horizontal plane inside a box made of nonmagnetic substance. When the coil of the tangent galvanometer is include in magnetic meridian and current passes by any of the coil then the needle at the centre gets deflected and comes to an equilibrium position under the action of two perpendicular field: one because of horizontal component of earth and the other because of field set up by the coil because of current (B).
What are the basic requirements of a Laser? Basic requirement of a Laser are as follows: 1. Active Medium: Active basic medium is needed to start the laser action. There
State Gauss' theorem in electrostatics. Using this theorem, derive the expression for the electric field intensity at any point outside a uniformly charged thin spherical shell.
Question: An optimistic model for a battery is just an ideal seat of EMF. A further realistic model commonly used to model actual batteries is Answer: Note that the i
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Give one example each for thermoplastic and thermosetting polymers Thermoplastics - Polyethylene, PVC etc. Thermosetting plastics - Bakelite (Phenolfomaldehyde resin), Urea
Driving nails with the help of inertia Extend a thin board over the edge of a table and support it well by having someone stand on the part in excess of the table. Try to drive
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Explain the production of Newton's ring because of reflected light with a neat diagram. Get the expression for the diameter of both dark and bright ring.
Violet light (λ = 415 nm) falls on a slit that is 0.040 mm wide. The distance among the centers of the central bright band and the third-order dark band is 18.7 cm. What is
Non- Linear circuit It can be described as that circuit whose parameters change with voltage or current.
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