1) 0.072 W 2) 0.10 W 3) 0.125 W 4) 0.50 W Answer: 2 PR = 0.5 W ⇒ i2R = 0.5 W Also, V = E – ir 2.5 = 3 – ir ⇒ir = 0.5 Power dissipated... View Article
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A block starts moving up an inclined plane of inclination 30° with an initial velocity of v0.It comes back to its initial position with... View Article
If minimum possible work is done by a refrigerator in converting 100 grams of water at 0°C to ice, how much heat (in calories) is released to... View Article
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Hydrogen ion and singly ionized helium atom are accelerated, from rest, through the same potential difference. The ratio of final speeds of... View Article
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The electric field of a plane electromagnetic wave propagating along the x direction in vacuum is , at the moment t = 0 is: Option 4 is the answer.... View Article
Concentric metallic hollow spheres of radii R and 4R hold charges Q1 and Q2 respectively. Given that surface charge densities of the concentric... View Article
A perfectly diamagnetic sphere has a small spherical cavity at its centre, which is filled with a paramagnetic substance. The whole system is... View Article
