Question

who will consume more electrical energy 600W tv set in 20 min ,500W heater in 20 min plz give step by step​

Answer 1

Electrical Energy = power x time

E = P x t

since time is same (20minutes)

E ∝ P

∴ E₁/E₂ = P₁/P₂ = 600/500 = 6/5= 1.2

∴ E₁ : E₂ = 6 : 5

∴ E₁ > E₂

∴ T V set consumes more electrical energy than heater.