A wire when connected to 220V mains supply has power dissipation P 1 . Now the wire is cut into two equal pieces which are connected in parallel to the same supply. Power dissipation in this case is P 2 . Then P 2 : P 1 is
Text Solution
Verified by ExpertsThe correct answer is:
B
When wire of resistance say 
is cut into two pieces, its resistance becomes half i.e. 
. Here equivalent resistance
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
One kilowatt hour is equal to
If and are respectively the filament resistances of a 200 watt bulb and 100 watt bulb designed to…
Two electric bulbs, one of 200 volt 40 watt and the other 200 volt 100 watt are connected in a hous…
The two bulbs as in the above question are connected in series to a 200 volt line. Then
Forty electric bulbs are connected in series across a 220 V supply. After one bulb is fused, the re…
The material of fuse wire should have