The amount of charge passed in time t through a cross-section of a wire is
`Q(t)=At^(2)+Bt+C.`
(a)Write the dimensional formulae for A,B and C.
(b) If the numerical values of A,B,and C are 5,3 and 1 respectively in SI units,find the value of the current at t=5 s.

The amount of charge Q passed in time t through a cross-section of a wire is Q=5t^(2)+3t+1 . The value of current at time t=5 s is

0.5 C charge passes through a cross-section of a conductor in 5 s . Find the current.

If charge through a cross-section of a conductor at timetis q= 2t^(2) +3t+1 . Find the current at t = 2s.

The flux of magnetic field through a closed conducting loop changes with time according to the equation, Phi = at^2 + bt+ c. (a) Write the SI units of a,b and c. (b) if the magnitudes of a,b and c are 0.20, 0.40 and 0.60 respectely, find the induced emf at t = 2 s.

(a) The amount of charge passed in time t through a cross-section of wire is q = alpha t - beta t^2 where alpha and beta are constant. (i) Find current in terms of time t . (ii) Sketch i versus t graph. (b) The current through a wire depends on time as i = 4 + 3t + 2t^2 Find the charge crossed through a section of wire in 6 sec .

Charge Q passing through a cross-section of conductor at an instant is given by Q= ( 0.5 t^(2) + t) C where t is in second . Current through the conductor at t=1 is

Charge through a cross-section of a conductor is given by Q = ( 2t^(2) + 5t) C . Find the current through the conductor at the instant t = 2 s .

Charge through a cross-section of a conductor is given by Q = (2t^(2)+5t)C Find the current through the conductor at the instant t = 2s.

Charge through a cross - section of a conductor is giveb by Q = (2t^(2) + 5t)C . Find the current through the conductor at the instant t = 2 s.

If A(5, 2), B(2, -2) and C(-2, t) are the vertices of a right triangle with angleB = 90^(@) then find the value of t.