191. An electric fan and heater are marked as 100 W and 220 V and 1000 W and 220 V respectively. The resistance of heater is

1. 1. Zero

   
   
   

   2. Greater than that of the fan

   
   
   

   3. Lesser than that of than

   
   
   

   4. Equal to than of fan

   
   
   

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   NA

   Correct Option: C

   NA

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192. The filament of bulb is of

1. 1. Mercury

   
   
   

   2. Copper

   
   
   

   3. Tungsten

   
   
   

   4. None of these

   
   
   

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   NA

   Correct Option: C

   NA

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193. The equivalent resistance of n identical resistors connected in parallel is x. If the resistors are connected in series, the equivalent world be

1. 1. nx

   
   
   

   2. n²x

   
   
   

   3. x / n

   
   
   

   4. x / n²

   
   
   

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   NA

   Correct Option: B

   NA

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194. As the electric charge on the surface of a hollow metal sphere increases, the electric field intensity inside the sphere

1. 1. Decrease

   
   
   

   2. Increase

   
   
   

   3. Remains the same

   
   
   

   4. None of these

   
   
   

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   NA

   Correct Option: C

   NA

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195. The electric field due to point charge at a distance R form it is E. If the same charge is placed on a metallic sphere of Radius R, the electric field on the surface of the sphere will be

1. 1. zero

   
   
   

   2. E / 2

   
   
   

   3. E

   
   
   

   4. 2 E

   
   
   

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   NA

   Correct Option: C

   NA

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