ICSE Class 10 Physics Current Electricity
 Find the magnitude of current through the 4\OmegaΩ resistor in the circuit shown.

Find the resistance between A and B.
 calculate the resistance of 1km long copper wire of radius 1mm
 what is ohm law ?

exercise 8a numerical 12
 exercise 8A numerical 10

exercise 8a numerical 8

exercise 8a numerical 8
 I had a query in th following question: A given wire of resistece is stretched to double its length. What will be its new resistance? How come the answer is 4 ?

plz solve this question from my board paper 2019