3. An electric lamp can be modelled as a resistor. Four electrical halogen light bulbs (lamps) will be used to illuminat
Posted: Tue Apr 26, 2022 2:16 pm
3. An electric lamp can be modelled as a resistor. Four electrical halogen light bulbs (lamps) will be used to illuminate an area of 100 m². A light intensity of 40 lm/m is needed. Light bulbs can supply 20 lm/W at 220V. What should be the power of each lamp to illuminate the area? What is the current and resistance of each lamp?