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In the following experiment, a constant-pressure calorimeter containing 100 ml of H 2 O is used. The initial temperature of the calorimeter is 24.6 o C. If 18.6 g of CaCl 2 is a
What is the work done to take a particle of mass m from surface of the earth to a height equal to 2R (R=radius of earth )? Ans) Initial PE= - GMm/R Final PE = - GMm/3R
For the magnetic circuit shown in Figure find the current I in the coil needed to produce a flux of 0.45mWb in the air gap. The silicon iron magnetic circuit has a uniform cros
Electromotive Force: (emf) A force which derives the electric current is known as electromotive force. OR The energy needed to drive the charge around the circuit is know
measurement and calculation with formula
The losses occurring in a transformer are:- I) iron loss II) copper loss
Specific heat of a gas is numerically equivalent to the amount of heat essential to raise the temperature of unit mass of gas by 1 0 C. In order to raise the temperature of unit ma
(a) Show that the total power in a 3-phase, 3-wire system using the two-wattmeter method of measurement is given by the sum of the wattmeter readings. Draw a connection diagram.
Core type Transformers: in this type of transformer the windings enclose the core (fig .given below). Both the windings are separated and half of every winding is placed on ever
what will happen when a ball is dropped in a hole passing through the centre of earth through out diametrically?
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