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Reactance of an inductor is given by:

NETNUST Entry TestPhysicsAlternating Current

What will be the impedance for $\rm{V=10\sin(wt)}$ and $\rm{I=20\sin(wt)}.$

NETNUST Entry TestPhysicsAlternating Current

The frequency of AC used in Pakistan is

NETNUST Entry TestPhysicsAlternating Current

An Inductor of 1 Henry is connected across a 220 V, 50 Hz supply. The peak value of current is approximately

NETNUST Entry TestPhysicsAlternating Current

The process of combining low frequency waves with high frequency is called

NETNUST Entry TestPhysicsAlternating Current

Wavelength of X-rays is of the order of?

NETNUST Entry TestPhysicsAlternating Current

Simple oscillating circuit consists of?

NETNUST Entry TestPhysicsAlternating Current

Power factor of pure capacitive circuit Is?

NETNUST Entry TestPhysicsAlternating Current

$\rm{P=I_{rms}V_{rms}}$ is applicable for

NETNUST Entry TestPhysicsAlternating Current

When A.C voltage V is applied to an inductor, then:

NETNUST Entry TestPhysicsAlternating Current

To maintain the current in an inductor, the applied voltage must be:

NETNUST Entry TestPhysicsAlternating Current

An inductor usually has:

NETNUST Entry TestPhysicsAlternating Current

The reactance of a coil depends upon:

NETNUST Entry TestPhysicsAlternating Current

A $\frac{100}{\pi}$ farad capacitor is connected to an alternating voltage of frequency 50 Hz. The reactance of the capacitor is:

NETNUST Entry TestPhysicsAlternating Current

All high frequencies of applied alternating voltage, the capacitor shows:

NETNUST Entry TestPhysicsAlternating Current

In case of capacitors, the unit of reactance is:

NETNUST Entry TestPhysicsAlternating Current

The measure of the opposition offered by a capacitor to the flow of an A.C is called:

NETNUST Entry TestPhysicsAlternating Current

When A.C voltage source is connected to a capacitor:

NETNUST Entry TestPhysicsAlternating Current

If x-axis represents the time, then slope of q-t curve gives:

NETNUST Entry TestPhysicsAlternating Current

When an alternating voltage is applied to a capacitor, the charge q deposited on the capacitor:

NETNUST Entry TestPhysicsAlternating Current

When V and I are in phase, then power is expressed as:

NETNUST Entry TestPhysicsAlternating Current

For resistance, V and I vectors are drawn:

NETNUST Entry TestPhysicsAlternating Current

In a purely resistive A.C circuit, instantaneous values of voltage and current:

NETNUST Entry TestPhysicsAlternating Current

Instantaneous value of an alternating voltage are sine functions which vary with:

NETNUST Entry TestPhysicsAlternating Current

The maximum current $I_{o}$ flowing through a resistor R connected with an alternating voltage source $V_{o}$ is given by:

NETNUST Entry TestPhysicsAlternating Current