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Q. In a galvanometer, increasing the current sensitivity does not necessarily increase voltage sensitivity. Explain
An interesting point to note is that raising the current sensitivity does not necessarily increase the voltage sensitivity. While the number of turns (n) is doubled current sensitivity is also doubled (from the equation θ/ I = nBA / C). But raising the number of turns correspondingly increases the resistance (G). therefore voltage sensitivity remains unchanged.
If the charges are situated in a medium of permittivity ε, then the magnitude of the force between them will be, If the charges are situated in a medium of permittivity ε, then th
It appears the intensity will be maximized at that positions where path dissimilarity is an integral multiple of wavelength these points are called as points of constructive inter
The drag on a submarine moving below from free surface (surface wave are not important) is to be determined by a test on a 1/15 scale model in a water tunnel. The velocity of the p
The process of transformation of one element into another by bombarding it with high energy particles is called "Artificial transmutation". Artificial radio activity is the proc
Q. What are secondary cells? Give an example? i) They are rechargeable. ii) The chemical reactions which take place in secondary cells are reversible. iii) The active mat
State two conditions which must be satisfied in order to apply tangent law in magnetism
Distance of the earth from the moon and the sun is? The distance of the earth from the moon is 2,40,000 miles or24 x 104 miles and that from the sun is 93,000,000 or 93x106 mil
Magic Carpet (Moscow Phys-Tech) Once sitting in heavy traffic the Baron von Münchausen thinking of a new kind of "magic carpet" type aircraft. The top surface of the large flat
Q. Movement of principal ray? In every case a principal ray moves from the head of the object to the plane of the lens. It passes through the plane of the lens as well as conti
Explain Constant current system Constant current system : - In this process, the charging current is kept constant by varying the supply voltage to overcome the enhanced back
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