Alternating Current Mock Tests

An AC voltage V = 100 sin(1000t) is applied across a series combination of R = 1 kΩ and C = 1 μF. The phase angle between the current and the voltage is:

AC emf E = E₀ sin(100t) on pure inductor L. Angular frequency and reactance:

In an LCR series circuit, R = 100 Ω, X_L = 150 Ω, X_C = 50 Ω. The impedance of the circuit is:

In a series LCR circuit, resonance occurs when:

In an LCR series circuit, L = 0.5 H, C = 80 μF, and R = 100 Ω. The resonant frequency of the circuit is approximately:

An AC source of voltage V = V₀ sin(100t) is connected across a pure capacitor of capacitance C = 10 μF. The phase relationship between the current and voltage is:

In a series LCR circuit at resonance, the impedance is:

In an AC circuit, the voltage is given by V = 200 sin(100t) volts and the current is I = 200 sin(100t + π/3) amperes. The power factor of the circuit is: