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Physics CIE help

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T.Q:

--- Quote from: without a name on May 03, 2010, 07:15:02 pm ---hey guys! Can u help me out in physics CIE paper1 nov03 Q31? am not able to solve it :-\

--- End quote ---

the total resistance of the circuit is = 4 ohms

find the current across the circuit using I=V/R  I=3A

Find the voltage across 2 ohms resistor  V=6v

SO , the voltage across  3 & 6 ohms resistors are V=6v

using  I=V/R across 6 ohms resistor

I=6/6

I=1A

SO THE ANSWER IS A

*Hope*:

--- Quote from: T.Q on May 03, 2010, 07:46:25 pm ---the total resistance of the circuit is = 4 ohms

find the current across the circuit using I=V/R  I=3A

Find the voltage across 2 ohms resistor  V=6v

SO , the voltage across  3 & 6 ohms resistors are V=6v

using  I=V/R across 6 ohms resistor

I=6/6

I=1A

SO THE ANSWER IS A

--- End quote ---
how did u get 4 ohms in the 1st place?? and can u tell me which paths to take to get the total resistance??

T.Q:

--- Quote from: without a name on May 04, 2010, 05:33:00 am ---how did u get 4 ohms in the 1st place?? and can u tell me which paths to take to get the total resistance??

--- End quote ---

for the parallel resistors  1/3 + 1/6 = 1/R   , 1/R=1/2 , so R=2

now for the series 2+2=4 for the total circuit 

*Hope*:

--- Quote from: T.Q on May 04, 2010, 10:19:36 am ---for the parallel resistors  1/3 + 1/6 = 1/R   , 1/R=1/2 , so R=2

now for the series 2+2=4 for the total circuit 

--- End quote ---
Thanks!!TQ
+rep

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