Capacitance formula

Capacitance
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Capacitance formula

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Description : What is capacitance?

Last Answer : Capacitance is the capacity of element to store electric charge in it. The unit of capacitance is Farad. 

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Last Answer : Answer: C

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Description : What is capacitance? State its unit.

Last Answer : Capacitance: The capacity of a capacitor to store electric charge is known as its capacitance. The capacitance of a capacitor is defined as the ratio of the charge Q stored on its either plates to the ... the plates. The capacitance is expressed as, C = Q/V The unit of capacitance is farad.

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Description : With the help of which bridge are the capacitance and dielectric loss of a capacitor generally measured ?

Last Answer : With the help of Schering bridge are the capacitance and dielectric loss of a capacitor generally measured.

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Define resistance capacitance & inductance

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what will be the capacitance if three capacitors connected in parallel each having value of 0.5 micro Farad ?

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Last Answer : the total capacitace when connected in parallel Tc=total capacitor c1=c2=c3=0.5uf Tc=c1+c2+c3 Tc=1.5uf

Capacitance can be measured by?

Last Answer : Capacitance meter or LCR meter.

What are capacitance units?

Last Answer : The unit of capacitance is Farad denoted by capital F .

A cylindrical cable of core radius 1.25cm and impregnated paper insulation of thickness 2.13cm and relative permittivity 3.5. Compute the capacitance of the cable/km (in nF

Description : A cylindrical cable of core radius 1.25cm and impregnated paper insulation of thickness 2.13cm and relative permittivity 3.5. Compute the capacitance of the cable/km (in nF

Last Answer : To calculate the capacitance of the cable per kilometer, you can use the following formula: C = ε * ε0 * A / d where: C is the capacitance of the cable per kilometer (in farads) ε is ... * 10^9 = 644 nF/km So the capacitance of the cable per kilometer would be approximately 644 nanofarads.

What is the effect of resistance , inductance and capacitance in transmission line ?

Description : What is the effect of resistance , inductance and capacitance in transmission line ?

Last Answer : These 3 factors create voltage drop and power loss of the line. The inductive reactance creates a voltage drop across the line and the capacitance creates a charging current.

Why is the capacitance ignored in the short transmission line ?

Description : Why is the capacitance ignored in the short transmission line ?

Last Answer : Capacitance is ignored due to low line length and low line voltage.

A capacitor of capacitance `C` carrying charge `Q` is connected to a source of emf `E`. Finally, the charge on capacitor would be

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Last Answer : A capacitor of capacitance `C` carrying charge `Q` is connected to a source of emf `E`. Finally, the charge on ... . Q B. Q + CE C. C E D. none

The latest PC keyboards use a circuit that senses the movement by the change in its capacitance, A) Capacitance keyboard B) Mechanical keyboard C) Qwerty keyboard D) Dvorak keyboard

Description : The latest PC keyboards use a circuit that senses the movement by the change in its capacitance, A) Capacitance keyboard B) Mechanical keyboard C) Qwerty keyboard D) Dvorak keyboard

Last Answer : Answer : A

All of the following are true about neurogenic shock except: A. There is a decrease in systemic vascular resistance and an increase in venous capacitance. B. Tachycardia or bradycardia may be observed, along with hypotension. C. The use of an alpha agonist such as phenylephrine is the mainstay of treatment. D. Severe head injury, spinal cord injury, and high spinal anesthesia may all cause neurogenic shock.

Description : All of the following are true about neurogenic shock except: A. There is a decrease in systemic vascular resistance and an increase in venous capacitance. B. Tachycardia or bradycardia may be ... Severe head injury, spinal cord injury, and high spinal anesthesia may all cause neurogenic shock.

Last Answer : Answer: C DISCUSSION: Neurogenic shock occurs when severe head injury, spinal cord injury, or pharmacologic sympathetic blockade leads to sympathetic denervation and loss of vasomotor tone. ... of treatment. The use of alpha-adrenergic agonist is infrequently necessary to treat neurogenic shock

Nitroglycerin, either directly or through reflexes, results in which one of the following effects (a) Decreased heart rate (b) Decreased venous capacitance (c) Increased afterload (d) Increased cardiac force (e) Increased diastolic intramyocardial fiber tension

Description : Nitroglycerin, either directly or through reflexes, results in which one of the following effects (a) Decreased heart rate (b) Decreased venous capacitance (c) Increased afterload (d) Increased cardiac force (e) Increased diastolic intramyocardial fiber tension

Last Answer : Ans: D

Which of the following parameters is not a primary parameter? a) Resistance b) Attenuation constant c) Capacitance d) Conductance

Description : Which of the following parameters is not a primary parameter? a) Resistance b) Attenuation constant c) Capacitance d) Conductance

Last Answer : Ans: B

The value of the capacitance depends upon the________________? A.voltage applied B. thickness of the capacitor plates C. geometry of the capacitor D. dinsity of the capacitor plates

Description : The value of the capacitance depends upon the________________? A.voltage applied B. thickness of the capacitor plates C. geometry of the capacitor D. dinsity of the capacitor plates

Last Answer : Ans: C

'Farad' is the unit of : (1) Capacitance (2) Inductance (3) Resistance (4) Conductance

Description : 'Farad' is the unit of : (1) Capacitance (2) Inductance (3) Resistance (4) Conductance

Last Answer : (1) Capacitance Explanation: The Farad is the SI derived unit of capacitance. It is named after the English physicist Michael Faraday.

The fuse in our domestic electric circuit melts when there is a high rise in – (1) Inductance (2) Current (3) Resistance (4) Capacitance

Description : The fuse in our domestic electric circuit melts when there is a high rise in – (1) Inductance (2) Current (3) Resistance (4) Capacitance

Last Answer : (2) Current Explanation: In electronics and electrical engineering, a fuse is a type of low resistance resistor that acts as a sacrificial device to provide over protection, of either the load ... fuse interrupts excessive current (blows) so that further damage by overheating or fire is prevented.

Which of the following circuit elements is used to 'block' DC in an electronic circuit? (1) Resistances (2) Capacitance (3) Inductance (4) Diode

Description : Which of the following circuit elements is used to 'block' DC in an electronic circuit? (1) Resistances (2) Capacitance (3) Inductance (4) Diode

Last Answer : (2) Capacitance Explanation: A capacitor (originally known as condenser) is a passive two-terminal electrical component used to store energy in an electric field. Capacitors are widely used ... electric power transmission systems for stabilizing voltage and power flow, and for many other purposes.

In the schematic of the electrical circuit shown in the illustration, what is the value of the total capacitance, when compared to the value of equal individual capacitors? EL-0038 A. Equal B. Half C. Double D. Squared

Description : In the schematic of the electrical circuit shown in the illustration, what is the value of the total capacitance, when compared to the value of equal individual capacitors? EL-0038 A. Equal B. Half C. Double D. Squared

Last Answer : Answer: C

In the illustrated circuit, one advantage of the capacitor coupling over direct coupling is ____________. EL-0048 A. as the frequency decreased the capacitive reactance (Xc) increases B. the amplifier becomes more efficient at lower capacitance. C. the arrangement allows the coupling of the signal while it isolates the biasing of each stage. D. good frequency response.

Description : In the illustrated circuit, one advantage of the capacitor coupling over direct coupling is ____________. EL-0048 A. as the frequency decreased the capacitive reactance (Xc) increases B. the amplifier becomes ... of the signal while it isolates the biasing of each stage. D. good frequency response.

Last Answer : Answer: C

When a megohmmeter is used to test the insulation of a large motor, the initial dip of the pointer toward 'zero' is caused by ____________. A. good insulation B. the capacitance of the windings C. the leakage of the current along the surface of dirty insulation D. the dielectric-absorption effect of the insulation

Description : When a megohmmeter is used to test the insulation of a large motor, the initial dip of the pointer toward 'zero' is caused by ____________. A. good insulation B. the capacitance of the ... of the current along the surface of dirty insulation D. the dielectric-absorption effect of the insulation

Last Answer : Answer: B

When using a megohmmeter to test the dielectric strength of wire insulation, a continuous series of slight downscale kicks by the pointer is result of ____________. A. good insulation B. the leakage of current along the surface of dirty insulation C. the capacitance of the windings D. the dielectric-absorption effect of the insulation

Description : When using a megohmmeter to test the dielectric strength of wire insulation, a continuous series of slight downscale kicks by the pointer is result of ____________. A. good insulation B. the ... dirty insulation C. the capacitance of the windings D. the dielectric-absorption effect of the insulation

Last Answer : Answer: B

When a megohmmeter is used to test the dielectric strength of wire insulation, the initial dip of the pointer toward 'zero' is caused by _____________. A. good insulation B. the leakage of current along the surface of dirty insulation C. the capacitance of the circuit D. the dielectric absorption effect of the insulation

Description : When a megohmmeter is used to test the dielectric strength of wire insulation, the initial dip of the pointer toward 'zero' is caused by _____________. A. good insulation B. the leakage of ... of dirty insulation C. the capacitance of the circuit D. the dielectric absorption effect of the insulation

Last Answer : Answer: C

Capacitance is the property of an electric circuit opposing a change in the _____________. A. current in the circuit B. voltage in the circuit C. inductance in the circuit D. resistance in the circuit

Description : Capacitance is the property of an electric circuit opposing a change in the _____________. A. current in the circuit B. voltage in the circuit C. inductance in the circuit D. resistance in the circuit

Last Answer : Answer: B

Capacitance in an AC circuit will _____________. A. stop current flow once the capacitor is fully charged B. allow current flow in only one direction C. oppose any change in circuit voltage D. rectify the current

Description : Capacitance in an AC circuit will _____________. A. stop current flow once the capacitor is fully charged B. allow current flow in only one direction C. oppose any change in circuit voltage D. rectify the current

Last Answer : Answer: C