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Physics, Chemistry and Biology: Post your doubts here!

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cn any1 plz answer it dat how would we b makng da circuit diagram for Q2
thnx in advance
 

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cn any1 plz answer it dat how would we b makng da circuit diagram for Q2
thnx in advance

  • Volmeter is connected only accross AB
  • CD is not connected only from one side so current won't flow through CD and would flow only through AB.
  • In Fig. 2.2, CD will be connected in parallel, so if you looked at Table. 2.1, you will find that current in circuit 2 increased as total resistance decreased.
  • In Fig. 2.3, CD will be connected in series, so if you looked at Table. 2.1, you will find that current in circuit 3 decreased as total resistance increased. Also, the voltage is halved as these two resistance wires are identical.
  • Resistor AB has to drawn as a normal resistor not as a variable resistor, even though it has a slider, as it was mentioned in the question"The circuit includes two identical resistance wires AB and CD. Use the standard symbol for a resistance to represent each of these wires."
  • We know which one is voltmeter and which one is ammeter from the fact that "ammeter is connected in series and volmeter is connected in parallel".
Hope it helped :)

O-N 2008 Phy.png
Picture made using Paint.
 
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0.5 Io = 0.5*(3.0)
=0.15

The resistance value from the table shows that a 10.1 value for R makes 0.15 A of current flow in the circuit
Let the resistance of X be x
Total resistance in circuit = 10.1 + x = 2x

solve for x
10.1 + x = 2x
x = 10

Thanks for explaining it. I just didn't see the Io in the 0.5Io.
 
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Can anyone just mark it with the arrow and show me where we draw the arrow? :(
 

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somebody explain me hooke's law
#IGCSE physics??????
:(:(:(:(:(:(:(:(:(
hookes law states dat extention of the spring is directly propotional to the loads dat cause dat specific extention untill limit of propotinality remains
the limit of propotionality is the point beyond which whn loads removed the spring loses its elasticity and so donot return to its orignal shape and size
hence the equation formed is F=kX
where F is the load hung , k is the constant and X is the extention
hope dat helps:)
 
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Epidermis has the root hair cells.
9.71.2.GIF

micro4_en_28.gif
 
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Please Help , how to do thisView attachment 37858
its of 2 marks so 2 points only to write
1. the sex of the fetus is determined by the 24th chromosome in the male gamete
2. if the gamete which fuses with femae gamete contain X chromosome so the fetus is female and if it contains Y so its male
( thx is cze female has XX chromosome and male have XY chromosome)
 
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