Electromagnetic-theory Questions Set 28:
What is the primary cause of the greenhouse effect?
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Find the magnetic field at the center of a ring with radius R and linear charge density λ.
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The frequencies of gamma rays, X-rays, and ultraviolet rays are denoted as a, b, and c, respectively. Then,
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The armature voltage control of a DC motor provides
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A charge that when placed in a vacuum from an equal and similar charge repels with a force of 9 × 103 N, is known as
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In a step-up transformer, 220 V is converted into 2200 V. The number of turns in the primary coil is 600. What is the number of turns in the secondary coil?
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Two charged spheres separated by a distance d exert a force F on each other. If they are immersed in a liquid with a dielectric constant of 2, then the force (under the same conditions) is:
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"In a source-free and homogeneous medium, Gauss's Law is- ∇ ⋅ D = 0 and ∇ ⋅ E = 0.
Comment on the above statement.
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Interference was observed in an interference chamber when air was present. Now, the chamber is evacuated and if the same light is used, a casual observer will see
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An organized system contains both positive and negative ions. If it is subjected simultaneously to an electric field along the +X direction and a magnetic field along the +Z direction, then
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