CBSE Class 12-science Answered
its a numerical
Asked by | 29 May, 2008, 11:54: AM
Expert Answer
Find resistance of the bulb using P=V2/R.
This will not change when voltage drops to 100V.
Then find I2Rt where change time in minutes to seconds.
Answered by | 29 May, 2008, 03:26: PM
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