Choose the correct alternative from the bracket.:-`(AC current//choke coil)` is a pure inductor used to reduce the alternating current without the wastage of energy.

Choose the correct alternative from the bracket:- The unit of capacitance is ……… (Farad/henry).

Choose the correct alternative from the brackets:- A heat sensitive resistor whose resistance varies appreciably with temperature is known as a ________ (Rheostat / Thermistor).

Choose the correct alternative from the brackets:- The drift velocity of electrons in a metalic conductor decreases with _________ In temperature (Increase/ decrease).

Choose the correct alternative from the bracket. Power of a lens Is the reciprocal of its focal length expressed in______ (Dioptre// metres)

Choose the correct alternative from the blacket:- Alloys of metals usually have _________(greater or less)resistivity than that of their constrituent metals.

Choose the correct alternative: Alloys usually have much (lower/higher) temperature coefficients of resistance than pure metals.