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What is density? Density is a physical characteristic, and calculates of mass per unit of volume of a material or substance. It is a measurement of the quantity of matter in a
What are eddy currents? State how their effect is decreased in transformers. (b) Verify the ef?ciency of a 15 kVA transformer for the following conditions: (i) full load, un
Anode rays were discovered by: (1)Goldstein (b)J. Stoney (3)Rutherford (4)J.J. Thomson Ans: (1)Goldstein
How could you predict the spontaneity of a chemical reaction, given changes in entropy and enthalpy?
Linear circuit :- It can be described as one, whose parameters are constant i.e. they do not change with voltage or current.
Potential barrier One either side of the junction, the region ‘D' becomes free from mobile charge carriers. That is on n-type side of D, no free electrons exist and on p-type s
Q. Illustrate why is there more friction when you push an object than when you pull it? Answer:- Friction doesn't differ depending upon whether an object is pushed or pull
When a P-type semiconductor is suitably joined to an N-type semiconductor, then resulting arrangement is called P-N junction or P-N junction diode Depletion region : On account
A coil of 300 turns is wound uniformly on a ring of non-magnetic material. The ring has a mean circumference of 40cm and a uniform cross-sectional area of 4cm 2 . If the current in
Stern-Gerlach experiment (O. Stern, W. Gerlach; 1922): An experiment which demonstrates the features of spin (intrinsic angular momentum) as a different entity in spite of orb
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