Alternating Current

An alternating voltage is written $V=V_m\sin \omega t$. The quantity $V_m$ represents the ...

The RMS (effective) value of a sinusoidal alternating voltage with maximum value $V_m$ is ...

An alternating voltage has a frequency of $50\text{Hz}$. Its period is ...

The inductive reactance $X_L$ is given by ...

The capacitive reactance $X_C$ is given by ...

The SI unit of impedance is ...

The maximum voltage of an AC source is $220\text{V}$. Its effective value is ...

An AC voltage is written $V=220\sin (100\pi t)\text{V}$. The source frequency is ...

A $0.2\text{H}$ inductor is connected to a $50\text{Hz}$ AC source. Its inductive reactance is ...

A $100\mu \text{F}$ capacitor is connected to an AC source with angular frequency $100\pi \text{rad/s}$. Its capacitive reactance is ...

A $110\Omega$ resistor is connected to an effective AC voltage of $220\text{V}$. The average power absorbed is ...

A series circuit has $R=30\Omega$ and $X_L=40\Omega$. Its impedance is ...

The resonance frequency of an LC circuit with $L=0.4\text{H}$ and $C=10\mu \text{F}$ is ...

The power factor of an AC circuit is given by ...

A series circuit has $R=40\Omega$, $X_L=30\Omega$, and $X_C=60\Omega$. Its impedance is ...

A series RLC circuit has an impedance of $50\Omega$ and is connected to an effective voltage of $100\text{V}$. The effective current is ...

The effective current of an RLC circuit is $2\text{A}$ and its resistance is $40\Omega$. The average power is ...

An effective current of $2\text{A}$ flows through an inductor with $X_L=40\Omega$. The effective voltage across the inductor is ...

In an AC circuit containing only a pure capacitor, the current ...

A series RLC circuit resonates at $50\text{Hz}$. If $L=0.5\text{H}$, the capacitance is ...