Question

four lamps of 200 watt 100 watt 60 watt and 40 watt are connected in parallel connection to a power supply of 220 volt calculate i) the total current consumed
ii)total resistance
iii) cost of keeping them lighted for 7 hours daily for 30 days if the cost of electricity being 30 paise per unit

Answer 1

Assuming each bulb is rated at 120V supply when connected across rated ... Resistance of 100W bulb = 200^2/100 = 400 ohms ... Current in the circuit = 200/2066.67 = 0.0967 A.

Answer 2

Answer:

Hello mate!

Here's your answer:

0.09679