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http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_s12_qp_11.pdf
can anybody tell da reason for Q 31 nd 36... puleajh!
can anybody tell da reason for Q 31 nd 36... puleajh!
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Can some one please explain these questions :Q9, Q11, Q14
http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_w10_qp_12.pdf
Increasing the variable resistor's resistance will make more PD fall on the variable resistor and less resistance on the fixed resistor! so Voltmeter reading will decrease..
But The ammeter reading will stay unchanged.. since the voltage in parallel circuits is same.. so according to the formula V=IR .. if R remains same I will remain same too.
so Answer should be C.
The reading on the voltmeter decreases because more voltage goes to the variable resistor. The reading on the ammeter isn't changed because the resistance of the resistor it is connected in series with is the same.
Thank u soo much.....could u please explain these questions 2...c 13.1 right? use v^2=u^2+2as, u=0 for the 1kg mass , a=9.81 and s= 0.5m find v.
doesnt the overall resistance of the parallel circuit reduce causing more current to flow from the battery ... i'm lost
The overall resistance of the circuit increases, so the current in the circuit decreases. But since the current through the first loop also decreases, it remains the same through the second loop.
put in values and you'll realise current increases ... its parallel combination remember!
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s10_qp_11.pdf
can anyone explain ques. 7, 10, 16, 24, 27, & 33.....ur help is highly appreciated
7. Diagram 2 shows that there's a zero error. Minus this from the reading on Diagram 1.
10. Final momentum must = initial momentum. Make sure you consider the directions for the velocities.
16. Since it's moving at constant velocity, the force upwards = the force downwards, which is the component of the weight parallel to the slope.
24. When is diffraction less?
27. W=Vq which is the same for all 4 point charges.
33. Put in numbers.
thnxx.....but if u brief me how to solve it then ill understand btr...ill b very grateful...7. Diagram 2 shows that there's a zero error. Minus this from the reading on Diagram 1.
10. Final momentum must = initial momentum. Make sure you consider the directions for the velocities.
16. Since it's moving at constant velocity, the force upwards = the force downwards, which is the component of the weight parallel to the slope.
24. When is diffraction less?
27. W=Vq which is the same for all 4 point charges.
33. Put in numbers.
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