[A] is a circuit connected in series with resistor of resistance \(R,\) coil of self-inductance \(L,\) and power supply of voltage \(V\). If we turn on the switch at \(t_0\) and turn it off at \(t_2\), the intensity of the current flowing through the resistor changes with time as in [B]. Which of the following statements is correct?
a) The direction of the current between \(t_0\) and \(t_1\) is the b direction in [A].
b) The resistance effect of the coil is maximized between \(t_1\) and \(t_2.\)
c) The intensity of internal magnetic field inside the coil is constant between \(t_2\) and \(t_3.\)