ThePrismSolutions

ThePrismSolutions

DAILY PRACTICE PAPER(11Th June 2018)

Q.) The length of cylindrical wires is increased by 100% due to the consequent decrease in diameter , the change in resistance of the wire will be:

(a) 100%      (b) 200%

(c) 300%        (d) 50%

Q.) If a wire is stretched to make it 0.1% longer it resistance ,

(a)  increased by 0.05%     
(b) increased by 0.02%
(c)  increased by 0.08%     
(d) increased by 8%

Q.) An electric current passed through a circuit containing two wires of same material, connected in parallel.If the length of raddi are in ration 4/3 and 2/3 .then the ratio of the current passing through the wire will be

(a) 3            (b)  1/3

(c) 8/9           (d) 2

Q.) By increasing the temperature , the specific resistance of a conductor and a semiconductor :

(a) increases for both         
(b) decreses for both.          
(c) increases and decreases respectively.       
(d) decreases and increases respectively.

Q.) A piece of copper and another germanium are cooled from room temperature to 80K .The resistance of :

(a) copper increases and germanium decreases        
(b) copper decreases and germanium increases.    
(c) each of them increases.     
(d) each of them decrease.



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