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It is the opposition offered by the material of the flux.
Reluctance α mean length of flux path and reluctance α 1/cross section A
Reluctance=1/μ0μrA
Here μ0 and μr are the permeability of free space and relative permeability of material respectively.
(i) Lead balls are spherical in shape. (ii) Rain leaves and a globule of mercury placed on glass plate are spherical. (iii) Hair of shaving painting brush, when goes in wate
Uses of radio isotopes: Used in i)Medicine ii) Industry iii) Agriculture iv) Meteorology and v) Radio active dating.
Discusse about motion of satellite
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Classification of conducting materials: Electrical resistivity of a conducting material or conductor ranges from 10 -8 to 10 -3 ohm-m. A good conducting material should have
the weight of man is 50kg in earth what is weight of man 15% of its weight in moon
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Basic principles of spectrophotometry: An absorbance spectrophotometer is an instrument that measures the fraction of the incident light transmitted through a solution
WHAT ARE THE PROPERTIES OF MAGNETS?
Introduction of physics- Physics Essentials Why do most people believe physics is too hard? Most people get hung up by the feeling that they do not 100% totally understand what
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