IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => Subject Doubts => GCE AS & A2 Level => Sciences => Topic started by: seanmc on May 06, 2010, 11:19:30 pm

Title: PLEASE HELP ME!!
Post by: seanmc on May 06, 2010, 11:19:30 pm

 
HI GUYS SO I WAS JUST WANDERING IF YOU COULD ANSWER MY PHYSICS QUESTION.IF THERE ARE TWO RESISTORS IN A CIRCUIT IN SERIES ,ONE WITH A HIGHER RESISTANCE THAN THE OTHER,DOES MORE VOLTAGE GO TO THE ONE WITH A HIGHER RESISTANCE OR LOWER RESISTANCE?  ???AND IF THEY WERE IN SERIES WHAT HAPPENS TOO?  :-\PLEASE I REALLY NEED HELP WITH THIS THANKS IN ADVANCE ;D ;) :D

Title: Re: PLEASE HELP ME!!
Post by: nid404 on May 07, 2010, 04:33:50 am

Higher voltage across higher resistance.

You mean what happens in case they are in parallel?

Title: Re: PLEASE HELP ME!!
Post by: seanmc on May 07, 2010, 06:30:07 pm

yh thats what i meant but thanks for the explanation,whats the reason tho?

Title: Re: PLEASE HELP ME!!
Post by: nid404 on May 07, 2010, 06:31:39 pm

In a series circuit, current is the same throughout.

V=IR  I is constant, when R is greater, V is greater

Title: Re: PLEASE HELP ME!!
Post by: seanmc on May 09, 2010, 10:53:34 pm

i see ..thanks ;D

Title: Re: PLEASE HELP ME!!
Post by: ruby92 on May 10, 2010, 12:00:50 pm

in a parallel circuit what would happen?

Title: Re: PLEASE HELP ME!!
Post by: haris94 on May 10, 2010, 12:05:44 pm

parallel circuit voltage is constant

V=IR    higher resistance, lower voltage and vice-versa