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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, 03:45: PM
answered-by-expert Expert Answer
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
 
Only one question per posting is allowed. Hence I answered only first question
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