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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).
why electrons do not exist in nucleus
Centrifugal force with a beaded chain Secure a length of beaded chain like that frequently used for pull cord on electric light switches or for key chains. Fasten the ends toge
Hawking radiation (S.W. Hawking; 1973): Black holes emit radiation such as any other hot body. Virtual particle-antiparticle pairs are being formed in supposedly empty space c
Visible Radiation (Waves): Visible waves have a wavelength range among 400 and 700 nanometre.
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what is 500,000+700,000
Resistance in Series: In such a combination the resistors give a single path to the passage of current and similar current passes by each of the resistors.
Used normally, a 150-watt, 120 volt light bulb requires how many amps of current? Ans: Used generally, a 150-watt, 120 volt light bulb needs 1.25 amps.
Determine the efficiency of a Carnot engine operating reversibly between 40°C to 20°C. Can you explain thermodynamic process? Give a brief account of any two such processes.
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