The phase diffenernce between the alternating current and emf is `(pi)/(2)`. Which of the following cannot be the constiuent of the circuit?

The phase difference between the alternating current and emf is pi/2 rad. Which of the following cannot be the constituent of the circuit ?

The phase difference between the alternating current and e.m.f. is pi//2 which of the following cannot be the constituent of the circuit?

The phase difference between the ac and emf is pi/2 . Which of the following cannot be the constituent of the circuit

An alternating emf 200 virtual volts at 50 Hz is connected to a circuit resistance 1omega and inductance 0.01 H . What is the phase difference between the current and the emf in the circuit? Also, find the virtual current in the circuit.