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the charge Q flowing in a conductor varies with time in accordance with the relation Q=at-btˆ2. if I be the current at an instant of time ,then I A] DECREASES LINEARLY WITH TIME B]REACHES A MAXIMUM AND THEN DECREASES C]FALLS TO ZERO AFTER A TIME t=a/2b D]CHARGES AT A RATE -2b

the charge Q flowing in a conductor varies with time in accordance with the relation Q=at-btˆ2. if I be the current at an instant of time ,then I 
A] DECREASES LINEARLY WITH TIME
B]REACHES A MAXIMUM AND THEN DECREASES
C]FALLS TO ZERO AFTER A TIME t=a/2b
D]CHARGES AT A RATE -2b

Grade:11

1 Answers

Khimraj
3007 Points
3 years ago
I = dQ/dt
So I = a – 2bt.
Since sign of a and b are not given, so we can not predict about option A, B,D
But it is sure that current falls to zero after time t = a/2b.

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