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AS PHY PRACTICAL 33

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Are you sure only one slope is included in the experiment. Cause i have a feeling Cambridge will just make the question a bit harder by trying to get us to find the distance the marble will travel up in another slope.
 
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thanks a loot bro...one last doubt :love:.. what we write when they say justify the no. of sig. fig. ??
You have to say that the values you used to calculate k were, for instance, 3 significant figures, so k too has to be 3. And if you use two values to calculate k, one 2 significant figures and the other 3 significant figures, then k can be either 2 or 3 significant figures.
 
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two questions....one electcial other mechanical... electricity one will consist of -Variable Resistor, switch, battery, a sample wire, connecting wires, an ammeter and voltmeter...u willhave to measure the V & I after setting the apparatus after changing resistance of the rheostat on the variable and make a graph using the values....
while the second one has a clamp stand, a marble, stopwatch...u need to slide down a ball from a certain height, note the time.....
brother kindly can u post again on this page... :p

here...
 
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time ke significant figures ka kya scene hota hai ?
1- reading from stop watch
2- manual watch
3- derived quantities from time ?

please help me out ...
 
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So according to that video ... when we have to vary resistance we just connect it to the circuit with upper connection .. ?
the question we'll be getting is not about varying the resistance..but about finding the resistivity for different length of wire. check O/N 2012 paper 34. a similar one probably. im not sure about this paper though
 
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and how to proove a given a relationship if proportional or not, after we have calculated the values of "k" ?
for e.g for xperiment 1. k is 0.789 and for experiment 2 k is 0.920 ... what do we do next from here ?
 
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the question we'll be getting is not about varying the resistance..but about finding the resistivity for different length of wire. check O/N 2012 paper 34. a similar one probably. im not sure about this paper though
resistivity has to be constant..
 
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