Qualification > Sciences
IGCSE PHYSICS DOUBTS HERE !!!!
SauD~:
--- Quote from: Relina on March 29, 2011, 10:58:01 pm ---when goalkeeper punches the ball over the bar,what happens to the ball as its bunched ??
answer says it changes both shape and direction why why ???
--- End quote ---
When ever force is applied to an object, it would change its shape, direction and speed.
Force always do that ::)
SauD~:
--- Quote from: Relina on March 29, 2011, 10:54:24 pm ---ammeter reads 2A
if lamp N removed the current in ammeter become less than 2A explain why???
sorry for poor drawing :(
--- End quote ---
I am not so sure about this one :-\
Maybe its something:
Currents gets divided into half in a parallel,
M lamp takes more current and in parallel it receive the half amount of current, while in series t consume more of current :-\
I am not sure
elemis:
--- Quote from: Relina on March 29, 2011, 10:54:24 pm ---ammeter reads 2A
if lamp N removed the current in ammeter become less than 2A explain why???
sorry for poor drawing :(
--- End quote ---
The ammeter reads a value of 2 amps since 2 amps are 'consumed' by the two lamps.
Lets say lamp M needs 1.8 amps and N neds 0.2, thus when N is removed only 1.8 amps are supplied by the battery as only M is left.
Thus, the ammeter reads 1.8 amps.
~ Miss Relina ~:
--- Quote from: Ari Ben Canaan on March 30, 2011, 07:11:17 pm ---The ammeter reads a value of 2 amps since 2 amps are 'consumed' by the two lamps.
Lets say lamp M needs 1.8 amps and N neds 0.2, thus when N is removed only 1.8 amps are supplied by the battery as only M is left.
Thus, the ammeter reads 1.8 amps.
--- End quote ---
Thanks for the idea but i;m soorry tht i didnot mention in my previuos posts that in the question they said that the two lamps were identical so does the same idea apply
and plz do u think that when a 2A are supplied by the battery whatever lamps was there or it depends on the resistance each lamp has ??? ???
~ Miss Relina ~:
hey guys i 've been waitin fir 10 days :-[
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