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A 20 Ω non-reactive resistor is connected in series with a coil of inductance 80mH and negligible resistance. The combined circuit is connected to a 200V, 50Hz supply.
Calculate
(a) the reactance of the coil,
(b) the impedance of the circuit,
(c) the current in the circuit,
(d) the power factor of the circuit,
(e) the power absorbed by the circuit,
(f ) the value of a power factor correction capacitor to produce a power factor of unity, and
(g) the value of a power factor correction capacitor to produce a power factor of 0.9
Energy that is radiated or transmitted in the form of rays or waves or particles.
A cube of side ‘a' is moving with speed 0.6 c normal to one of its face. What is its volume observed by an observer stationed on the earth ? The volume of cube = a x a x a = a 3
like parallel forsces
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you are trying to measure the diameter of a circular lab table using a lab metre stick. you measure the diameter in several directions and find the following results: 98.5 cm, 1.00
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Draw a graph showing the variation of potential energy of a p of nucleons as a function of their separation. Show the regions in which nuclear force is (i) attractive, and (ii) rep
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