Exam 23: RC and LR Time Constants

The transient response of capacitive circuits is measured in terms of the addition of R + C.

Whether an RC time constant is long or short depends on the ______________ width of the applied voltage.

What is the time constant for an RC circuit that has an R of 10 k? and C of 0.05 ?F?

Many applications of inductance are for sine-wave ac circuits, but any time the current changes; L has the effect of producing induced voltage.

Resistance has no concentrated magnetic field to oppose a change in I, like inductance, and no electric field to store charge that opposes a change in V, like capacitance.

A capacitor can be charged slowly by a small charging current through a high resistance and then be discharged quickly through a low resistance to obtain a pulse of discharge current.

Time constant t = RC.

In an RL circuit, the transient response is measured in terms of the ratio

______________ response is a temporary condition that exists only until the steady-state current is reached.

The voltage across C in an RC circuit is called a(n)

RC specifies the time it takes C to charge to ______________ percent of the charging voltage.

A circuit whose output is proportional to the charge being stored is a(n)

RC specifies the time it takes C to charge to 63% of the charging voltage.

The transient response of capacitive circuits is measured in terms of

The time constant is often symbolized by

A coupling capacitor must exhibit capacitive reactance that is one-tenth or ______________ of its series resistance at the desired frequency.

While the current is building up in an RL circuit, I is changing and the inductance opposes the change; this time is called the transient response.

The average height of any waveform over one full cycle is its

In electronic circuits, when analyzing the effect of L or C on the waveshape of nonsinusoidal voltages, what is useful?

A coupling capacitor must be