Question
if an area of isoscale right angle triangle(made of uniform wire of unit resistivity) is 8 unit. a battery of emf 10 unit is connected with across the longest branch then the current drawn from battery is approx ans is 3A
area = l2/2 = 8 so l = 4
ρ = 1
so resistance of the 3 legs of the triangle = 4/A, 4/A, 4√2/A
battery is connected across the longest branch so eq. resistance = 4/A+4/A+4√2/A = 13.6/A
i think area of cross section will be given then calculate current