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CBSE Class 10 Answered

out of 60w and 40w lamps,which one has a higher electrical resistance when in use and why?
Asked by | 13 Jun, 2008, 02:18: PM
answered-by-expert Expert Answer

if the lamps are operated at same voltage say 220v

then second bulb has higer resistance to calculate the resistace use the formula

 P= V2/R

put the value of p and v and calculate the value of R

Answered by | 13 Jun, 2008, 08:27: PM
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