ICSE Class 10 Answered
Q1:In an experiment of veificaion of Ohm's Law,following observations are obtained.
Potential Difference V (in volt)=0.5,1.0,1.5,2.0,2.5
Current I(in ampere)=0.2,0.4,0.6,0.8,1.0
Q1a:Draw a V-I graph.
Q1b:The potential Difference V when the current I is 0.5A
Q1c:The current I when the potential difference V is 0.75V.
Q1d:The resistance in circuit.
Q2:Two wires of the same material and same length have radii 1mm and 2mm respectively.Compare:a.Their resistances and b.Their specific resistances.
Q3:A wire of resistance 3 ohm and length 10 cm is stretched to length 30 cm.Assuming that it has a uniform cross section,what will be its new resistance?
Q4:A wire of resistance 9 ohm having length 30 cm is tripled on itself.What is its new resistance?
Asked by kaursukhjindersukh | 04 Sep, 2018, 15:45: PM
![](https://images.topperlearning.com/topper/tinymce/imagemanager/files/c1a390d437bae059530cff2f70b36cd25b922963be16e6.08723479sep0701.png)
Resistance = ![begin mathsize 12px style fraction numerator increment V over denominator increment A space end fraction space equals space fraction numerator 0.5 over denominator 0.2 end fraction space equals space 2.5 space capital omega end style](https://images.topperlearning.com/topper/tinymce/cache/1b2334317da65b6ea59c48424751ab62.png)
![begin mathsize 12px style fraction numerator increment V over denominator increment A space end fraction space equals space fraction numerator 0.5 over denominator 0.2 end fraction space equals space 2.5 space capital omega end style](https://images.topperlearning.com/topper/tinymce/cache/1b2334317da65b6ea59c48424751ab62.png)
Only one question per posting is allowed. Hence I answered only first question
Answered by Thiyagarajan K | 07 Sep, 2018, 13:05: PM
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