Question

Which of the following statements is/are true for any possible series combination of inductors, capacitors and resistors across an ac voltage source?

• A. If the current and voltage are in the same phase the circuit must be purely resistive (i.e. there are no inductors and capacitors connected)
• B. If the current and voltage are in the same phase, increasing the resistance will result in decreasing the current drawn from the source.
• C. If the current and voltage have a non-zero phase difference there must be atleast a single capacitor or inductor connected.
• D. If the current and voltage are in the same phase (for a given circuit) then increasing or decreasing the resistance ( keeping all other components the same) will result in a phase difference appearing between current and voltage.

Answer 1

The correct option is C If the current and voltage have a non-zero phase difference there must be atleast a single capacitor or inductor connected.

Capacitor and resistors across an ac voltage source if the current and voltage have a non-zero phase difference there must be at least a single capacitor or inductor connected.

Option $C$ is correct answer for given following statement.