Ans: (a)
259. The device that storea an electric charce is known aa
   (a) transistor
   (b) conductor
   (c) capacitor
   (d) electroscope
Ans: (c)
260. The, capacitors (condensers) are used
   (a) to smoothen the flow of fluctuating current
   (b) in circuits that tune a TV or radio to the desired station
   (c) to block a continuous flow of direct current but allow an alternating
       current to flow through them
   (d) All the above
Ans: (d)
261. An integrated circuit is more advantageous than a conventional circuit
   (a) they make the electric equipment more reliable and easier for servicing
   (b) a faulty part of a conventional circuit may be difficult to locate and repair
   (c) if a part of the integrated circuit fails the entire circuit is simply replaced
   (d) All the above
Ans: (d)
262. The transistor was invented by
   (a) Marconi
   (b) Baird
   (c) John Bardeen, Walter H. Brattain and William Shockley
   (d) Edison
Ans: (c)
263. When temperature decreases, resistance of metals to flow of electricity
   (a) increases
   (b) decreases
   (c) neither increases nor decreases
   (d) first increases then decreases