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Alternating Current: (AC)
Such a current can be obtained if a resistor is linked in series with a source of alternating voltage. This current alters its direction so many times in a second.
Two bodies are moving in circular paths of equivalent radii. If the speed of the first body is twice that of the second, the centripetal acceleration of the first body is how
Disadvantages of D.C. Transmission of power 1. Electric power cannot be produced at high d.c. voltages because of commutation problem. 2. The d.c. voltage cannot be stepped
Define the Magnets Magnets work according to rules similar to electric charges. All magnets have two poles, north (actually north-seeking) and south poles. Like poles repel and
investigatory poject class 12
LENARD ATOMIC MODEL : Lenard suggested that the atom must have a lot of empty in it. Lenard's model of an atom could not explain about the stability and mass of an atom .
1. There are 40 such microwave hops in tandem. What is the end-to-end C/N of the link? 2. Assume now that these 40 hops are replaced by a single satellite hop as shown below.
Write down the electromagnetic wave equation in free space, in terms of vector and scalar potential.
What is an intrinsic semiconductor? How can this material be changed into (i) P-type (ii) N-type extrinsic semiconductor? Describe with the help of energy band diagrams
A monkey of mass m climbs a rope slung over a light frictionless pulley.The opposite end of the rope is tied to a block of Mass M lying on a smooth horizontal plane.Find the accele
When a small size magnet is laid in two uniform magnetic fields and which are at right angles to each other, the magnet comes to rest at an angle Φ with respect to B h like that
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