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ALL PHYSICS QP & MS 01 from 1993 - 2003 AVALIABLE HERE!!!! Rev. Help Links!!

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Ghost Of Highbury:
if the effecitve resistance decreases, the the current should increase right

inversely proportoinal??

hmh:

--- Quote from: Priceless on June 09, 2009, 07:39:50 pm ---adi...just 2 correct u...da total current duznt get reduced....if a lamp is removed....da resistance decreases.....den current wud split according 2 dat

plz correct me if im wrong ;D

--- End quote ---

as far as my brain works... not sure if it does.. but the answer should be A.. as the current wont decrease or increase but jst go thru M only instead of M and N. so i guess you r correct priceless :)

astarmathsandphysics:
yes if the voltage is fixed

Hope:
The answer to your qn would definitely be C.

And this is because..

When you have M and N..they're connected in parallel. Lamps form resistence..Hence, their overall resistance is less than both, right?

However, when you are left with one lamp, in series with the ammeter.. The resistance is increased.

Thus, the current, is decreased..

If you analyse the circuit, you will see that this proves to be right!

Hope I helped :)

7ooD:
yes im with hmh and if u r crazy or stupid no offense lol then im with u cuz i think it is A too

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