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A coil of 600 turns is wound uniformly on a ring of non-magnetic material. The ring has a uniform cross-sectional area of 200mm2 and a mean circumference of 500mm. If the current in the coil is 4A, determine
(a) The magnetic field strength,
(b) The flux density, and
(c) The total magnetic flux in the ring.
A polarizer (Polarization) consists of long-chain polymers aligned in a preferred orientation. How does that orientation evaluate with the direction of polarization of the polarize
A spring is held vertically downward and a current is passed through it . Then the length of the spring : A . increases B. decreases C . does not change D the spring osc
Q. Explain Mirror - Lens Equation? A central equation in optics relates the focal length, object distance and image distance for a thin lens or mirror. This equation is general
Consider the 4-f system below where an object is placed at the input plane and is illuminated by a plane wave The object to the right is placed in the input plane where b
Resistor in Parallel Components are said to be in parallel when they are connected in such a way as to provide alternative paths for current flow. The characteristics o
is pulling force easy or pushing
A silicon material is subjected to a magnetic field of strength 1000A/m. If the magnetic susceptibility of silicon is -0.3x10-5, calculate its magnetization and magnetic flux densi
Five people are playing tug-of-war. Anders and Alyson pull to the right with 45 N and 35 N, respectively. Calid and Marisol pull to the left with 53 N and 38 N, respectively.
Define the term scanning electron microscope. Scanning electron microscope: The scanning electron microscope (SEM) is a form of electron microscope which images the sample s
(i)Cathode waves always travel in straight path. (ii) Cathode rays exert mechanical force on the objects they strike. (iii) Cathode rays make fluorescence. (iv)
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