Current Electricity and Electrical InstrumentHard
Question
The charge flowing through a resistance R varies with time as Q = 2t - 8t2. The total heat produced in the resistance is (for 0 ≤ t ≤ 
)
)Options
A.
joules
joulesB.
joules
joulesC.
joules
joulesD.R joules
Solution
I = 
= 2 - 16t
Power : P = I2R = (2 - 16t)2R
Heat produced =
(4- 256t2 - 64t)Rdt
=
joules
= 2 - 16tPower : P = I2R = (2 - 16t)2R
Heat produced =
(4- 256t2 - 64t)Rdt=
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