Four resistor networks are shown. If the same current flows through each network and every resistor has resistance r, arrange their power dissipations P₁, P₂, P₃ and P₄.

Question

G1 Physics · Accepted Answer

For the same current I, power is P=I²R(eq). Therefore rank the four networks by their equivalent resistances. The order is P₂>P₃>P₄>P₁, hence option A.