" Find Instantaneous electric current at "t=2sec," if `Q=4t^(2)+alpha`

If q=2t^(2)+3 , find current at t=2 sec ?

The instantaneous magnetic flux phi in a circuit is phi=4t^(2)-4t+1 .The total resistance of circuit is 10Omega . At t=(1)/(2)s ,the induced current in circuit is

The instantaneous magnetic flux phi in a, circuit is phi = 4t^2 - 4t + 1 . The total resistance of the circuit is 10Omega . At t = 1/2s , the induced current is—

A body is released to fall under the influence of gravity and its equation of motion is given by s(t)=(9t^(2)+4)sec . Find the ratio of the instantaneous velocities of the body at the fifth second to that at the seventh second after release.

The instantaneous value of current in an ac circuit is I = 2 sin (100pit + pi//3) A . The current at the beginning (t = 0) will be –

In an ac circuit the instantaneous values of current and applied voltage are respectively i=2(Amp) sin (250pis^(-1)t and epsi =(10V) sin [(250pis^(-1))t+(pi)/(3) , Find the instantaneous power drawn from the source at t=(2)/(3)ms and its average value.

In an ac circuit the instantaneous values of current and applied voltage are respectively i=2(Amp) sin (250pis^(-1)t and epsi =(10V) sin [(250pis^(-1))t+(pi)/(3) , Find the instantaneous power drawn from the source at t=(2)/(3)ms and its average value.