# Can you have an A

(a) No. (b) No.

For an LCR circuit with angular frequency ω, the impedance is given by the formula where R = resistance, L = inductance, C = capacitance.

Now, the phase difference between the current and the voltage is given by the formula , where = phase difference, ω = angular frequency, L = inductance, C = capacitance, R = resistance.

Since there are no restrictions on the values of L, C or R, it is obvious that can take any value between -∞ to +∞, that is can take any value between -900 to +900 (since tan 900 = ∞)

Since both 1200 and 1800 fall beyond the permitted range of values, we cannot have an AC circuit with any of the given phase differences. (Ans)

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