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Assuming the lamps are plugged into a 60 volt outlet, the 40 W lamp has more resistance. This can be shown mathematically:
Resistance= V2/P=602/40=3600/40=90 ohms (40 Wlamp)
Resistance= V2/P=602/60=3600/60=60 ohms (60 Wlamp)
This shows that 40W lamp has more resistance than a 60W lamp.
Wiki User
∙ 14y ago
Wiki User
∙ 12y agoDid you buy it in Europe or in North America ?
In North America, it's expecting to be powered by 120 volts.
In most of the rest of the world, it expects 240 volts.
120 volts, 60 watts:
P = E2 / R
R = E2 / P = (120)2 / 60 = 240 ohms
240 volts, 60 watts:
R = E2 / P = (240)2 / 60 = 960 ohms.
Wiki User
∙ 11y agoYes, it consumes about 33% less provided both bulbs are of the same type. It consumes less because the current is less.
AnswerThe power of a lamp, in watts, is the rate at which it consumes energy -so, obviously, a 40-W lamp will consume less energy over a given period of time than a 60-W lamp -in the same way as you will travel less far at 40 km/h than you would at 60- km/h!
Wiki User
∙ 15y agoThe 40 watt bulb will for sure, you can find this out using simple watts and ohms laws. P=VC and V=RC where P=power V=voltage R=resistance and C=current.
Wiki User
∙ 10y agoThe formulas you are looking for is R = E squared/W or R = W/I squared
For 60W@12V the resistance is 2.4 Ohms
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