(c) Dry cell
   (d) All the above
Ans: (a)
295. The heat generated in a conductor carrying current is proportional to
   (a) the resistance
   (b) the square of the current flowing through it
   (c) the time the current flows
   (d) All the above
Ans: (d)
296. An electric fan converts
   (a) electrical energy into heat energy
   (b) electrical energy into mechanical energy
   (c) mechanical energy into electrical energy
   (d) mechanical energy into heat energy
Ans: (b)
297. When an electric bulb breaks, there is an explosive sound. That is due to
   (a) the chemical reaction between the gases inside the bulb
   (b) the compressed gases inside rushing out suddenly
   (c) the air outside rushing in to fill the vacuum inside the bulb
   (d) None of the above
Ans: (c)
298. The air inside an electric, bulb is removed to prevent
   (a) oxidation of the tungsten filament
   (b) bursting of the bulb
   (c) loss of light due to absorption
   (d) keeping the weight of the bulb less
Ans: (a)
299. Alternating Current (AC) is more advantageous than direct current
   because
   (a) it can be transmitted easily and efficiently
   (b) Alternating Current (AC) loses the least amount of energy when
       transmitted at high voltages
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