A5 kg block is resting on a ramp inclined at 35 degrees above the horizontal. what is the magnitude of the normal force acting on the block? a) 40 n b) 28 n c) 49 n d) 4.1 n

i think its

r=rho l/a where a is the area, l is the length and rho is resistivity so the greater the area the lesser the resistance thats why the earth pin is thicker bcos current follow the shortest path, so less resistive .