Two decorative lamps are rated at and respectively
MATHEMATICS · Multi-part · ISC · Physics · Current Electricity · Ohm's law, V-I graphs and ohmic/non-ohmic conductors
Problem
Two decorative lamps are rated at 15Ω and 20Ω respectively. They are connected in parallel across the 230V mains supply.
Answer the following.
(i) Calculate the current through each lamp.
(ii) Determine the power dissipated in each lamp.
(iii) Find the total energy consumed by the two lamps together in 5min. Express your answer in joule.