Chapter 7 Capacitors

How is ac current related to ac voltage in a purely capacitive circuit?

The material used between the plates of a capacitor is called its:

When is a capacitor fully charged?

A capacitor is constructed of two parallel:

A capacitor stores energy within a dielectric between the conducting plates in the form of:

As a capacitor is being charged, current flowing into the capacitor will:

As a capacitor is being charged, the voltage across its terminals will:

When a circuit consists of a capacitor and a resistor in series with a voltage source, and the voltage across the resistor is zero, than the capacitor is:

If a charge capacitor is is disconnected from a circuit, it will:

The strength of an electric field at a given point is proportional to the potential difference on the plates and inversely proportional to the:

The strength of an electric field at a given point is proportional to the potential difference on the plates an inversely proportional to the:

For a given charge difference, electrostatic field strength varies according to:

What is the value of a capacitor that can store two coulombs of charge when 500 volts is applied across its plates?

* If the dielectric constant of a capacitor is decreased, than its capacitance will:

Most older types of paper capacitors have been replaced by which type of construction?

Capacitor value markings are usually:

*

After which time constant can a capacitor be considered to be fully charged?

An 8 V power source is charging a capacitor. how many volts will be across the capacitor at the second time constant?

A capacitor's rate of charge is considered:

A source voltage across a capacitor will:

Power stored from the source and than returned to the source is called:

If an open capacitor is checked with an ohmmeter, the needle will:

What is wrong with a leaky capacitor?

In a circuit, an output capacitor and a resistor are connected in series with an ac signal. What filter action will be the result?

In an ac circuit, a capacitor and an out-put resistor are connected in series with an ac signal. What filter action will be the result?

A capacitor and an output capacitor resistor from a series circuit with a SQUATE wave applied. The circuit is:

A resistor and output capacitor from a series circuit with a square wave applied. The circuit is:
*

The reactance of a capacitor in a DC circuit is:

What is the value of a capacitor connected to a 500 kHz AC source that has 1 k ohms of resistance?
C=1/2^fXc

What is the value of theta for an AC circuit that consists of a 10 ohm series resistor and a capacitor with a reactance of 15 ohms?
TAN(O)=opp/ADJ= -5ohm/10ohm

Power that is stored from a source and than return to the source is called:

**Power that is measured in voltage-amperes is called:

If the reactive power of a circuit is 50 mw, while the apparent power is 64 mw, than what is the true power of the circuit?
Pt=sqr/(Pa)sq-(Pr)sq

What is the power factor if the apparent power of a circuit is 5 w, while the true power is 4 W?
P.F.=Cos(0)= Pt/Pa= 4W/5W=

What is the capacitive reactance?
1v, 15kHz, 3.3uf
Xc=1/2^fc
1/ 2^(150000Hz)(3.3)(10)-6F=?1/x

**If the dielectric strength of a capacitor is decreased, than its capacitance will:

?**In a 29 V Ac series RC circuit, if 20 volts is read across the resistor and 40 volts is measured across the capacitor, the applied voltage is:

?**What is the impedance of a 60 Hz, 2 V AC circuit that consists of a 22uf capacitor, and a 100 ohm resistor connected in parallel?

**A capacitor rate of charge is consider:

**Power that is measured in volt-amperes is call:

?**What is the total current in a Parallel circuit consisting of a 1.27 uf capacitor, and a 50 ohm resistor, with a 2.5 kHz, 10 V AC supply?

?**Power that is measured in volt-amperes is called:

**What is the total current in a parallel circuit consisting of a 1.27 uf capacitor, and resistor, and a 50 ohm resistor, with a 2.5 Khz, 10 V AC supply?

When a good capacitor is ohmeter checked with a DDM, the bar graph display will:

?**If a 500 UF capacitor has stored 2 coulombs of charge, than what is the voltage across the capacitor?

? What is the time to charge the capacitor?
series: 12 v, R1 11ohm, C1 ?

?**What is the capacitive reactance,of a 4.5 uf capacitor connected to a 1 khz ac source?