NOTE: i.Answer each question brieflyand to the point. ii.Figures can be drawn to support the answers, if necessary. 1.Are the direction and magnitude of the Coulomb force unique at a given point in space? What about the electric field? 2.Does the capacitance of a device depend on the applied voltage? What about the charge stored in it? 3.List the ways in which (a) magnetic field lines and electric field lines are similar, (b) they differ. 4.Why is the index of refraction always greater than or equal to 1? 5.Explain why an object in waterappears to be at a depth shallower than it actually is?
NOTE: i.Answer each question brieflyand to the point.
ii.Figures can be drawn to support the answers, if necessary.
1.Are the direction and magnitude of the Coulomb force unique at a given point in space? What about the electric field?
2.Does the capacitance of a device depend on the applied voltage? What about the charge stored in it?
3.List the ways in which (a) magnetic field lines and electric field lines are similar, (b) they differ.
4.Why is the index of refraction always greater than or equal to 1?
5.Explain why an object in waterappears to be at a depth shallower than it actually is?
6.Can refractive index be negative?
7.How is heat transfer related to temperature?
8.When a sealed thermos bottle full of hot coffee is shaken, what changes, if any, take place in (a) the temperature of the coffee and (b) its internal energy?
9.What happens to the barrier potential of the diode when the temperature increases?
10.What is the charge on an N-type and a P-type semiconductor?
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