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devajith Grade: 12
        

The charge flowing through a resistor varies with time as Q=2t-8t^2.The total heat produce in the resistor is?

2 years ago

Answers : (6)

Nicho priyatham
626 Points
										
differenciate  and get i
now p=i2R
approve if useful in case of any doubt ask in ans box
wts the value of R
2 years ago
devajith
35 Points
										
in the interva 0
2 years ago
Nicho priyatham
626 Points
										
 i am sorry i didnt get  u
do u mean wn t=0......?
2 years ago
devajith
35 Points
										
sorry my comp hanged
in the interval 0
Resistance is R itelf
The answers are in fractions of R
2 years ago
devajith
35 Points
										
(0,1/8)
 
2 years ago
Nicho priyatham
626 Points
										

If Q=2t-8t2 then i=dq/dt

so i=2-16t

so at t=0 i=2

since p=i2R  so p=4R 

plz approve if usefu n in case of any doubts put in ans box 
 
2 years ago
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