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Q. State Coulombs law in electrostatics?
Coulomb's law declares that the force of attraction or repulsion between two point charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them. The direction of forces is beside the line joining the two point charges.
Truck has a 100 kW engine power and 40 % efficiency . As oil burn in an hour if q = 4.4 to force multiplication 10 to 7 ?
A car is moving along a straight horizontal road at a speed of 20 meters per second. The brakes are applied and a constant force of 5000 Newtons decelerates the car to a stop in 1
Essential properties of the medium for wave propagation: (i) Elasticity: So that particle can return to their mean position, after having been disturbed. (ii) Inertia : So t
In an electric field a charge (Q) experiences a force F = QE. If charge is positive then force is directed in the direction of field whereas if charge is negative force acts on i
Dalton's law of partial pressures (J. Dalton) The overall pressure of a mixture of ideal gases is equivalent to the total of the partial pressures of its components; i.e., the
a) Thomson's heat is proportional to the current passing by the conductor. b) This effect is produced when parts of similar conductor are kept at dissimilar temperature. c) I
Q. How can we increase the current sensitivity of a galvanometer? The current sensitivity of a galvanometer is able to be increased by (i) Rising the number of turns (ii
Na + ion is isoelectronic with: (1) Li + (2) Mg +2 (3) Ca +2 (4) Ba +2 Ans:(b) Mg +2
what are the source of error in simple pendulum
(a) Distinguish among metals, insulators and semiconductors on the basis of their energy bands. (b) Why are photodiodes used preferably in reverse bias condition? A photodiode i
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