1 Answer

Answer :

The capacitor charging current is An exponential growth function

Related questions

Description : A 100 pF capacitor has a maximum charging current of 150 μA.What is the slew rate ? (A) 1.5 V/μs (B) 1.05 V/μs (C) 0.15mV/s (D) 10.5 mV/s

Last Answer : A 100 pF capacitor has a maximum charging current of 150 μA.What is the slew rate ? (A) 1.5 V/μs (B) 1.05 V/μs (C) 0.15mV/s (D) 10.5 mV/s

Description : Which of the following conditions indicates a short circuited capacitor when checking its condition with an ohmmeter? A. The capacitor shows charging, but the final resistance reading is appreciably less ... moves quickly to the low resistance side of the scale, then slowly recedes toward infinity.

Last Answer : Answer: B

Description : Work done in charging a capacitor is given by A. (1⁄2)QV B. 2QV C. QV D. 2V

Last Answer : (1⁄2)QV

Description : In an LC choke-input filter, what prevents the rapid charging of the capacitor?

Last Answer : The CEMF of the inductor

Description : In an LC choke-input filter, what prevents the rapid charging of the capacitor?

Last Answer : Counter electro-motive force of the inductor.

Description : A circuit is to be designed in which a capacitor must charge to 40 percent of the maximum charging voltage in 200 microseconds. The resistor to be used has a resistance of 40,000 ohms. What size capacitor must be used?

Last Answer : 0.1 microfarads 40% from the graph = 0.5

Description : What is the voltage drop across the resistor in an RC charging circuit when the charge on the capacitor is equal to the battery voltage?

Last Answer : Zero.

Description : At what instant does the greatest voltage appear across the resistor in a series RC circuit when the capacitor is charging?

Last Answer : At the instant of the initiation of the action.

Description : state what happens to the electrons in a capacitor circuit when (a) the capacitor is charging and (b) the capacitor is discharging.

Last Answer : a. When the capacitor is charging, electrons accumulate on the negative plate and leave the positive plate until the charge on the capacitor is equal to the battery voltage. b. When the ... the negatively charged plate to the positively charged plate until the charge on each plate is neutral.

Description : Charging Action of capacitor

Last Answer : Charging Action of capacitor .embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }

Description : Capacitor : Before charging takes place

Last Answer : Capacitor : Before charging takes place

Last Answer : The voltage across a capacitor Lags the current through it by 90

Last Answer : For a pure capacitor, the voltage-current relationship is: Voltage lags current by 90*

Description : A capacitor and coil in parallel is called

Last Answer : 1. A tuned circuit

Last Answer : A dielectric material is placed in between the plates of a capacitor, it Increases the capacitance.

Last Answer : In a power supply a shorted input capacitor is likely to result in No voltage output.

Last Answer : A capacitor stores energy in Dielectric dipole

Description : Why shunt capacitor is used?

Last Answer : To improve voltage at receiving end and power factor

Description : Why capacitor bank is used?

Last Answer : In industrial or factory used E.B Power supply must be maintained above 0.90 power factor is compulsory for avoid EB Penalty. So APFC ( automatic Power factor control ) panel is used to maintained balance the load and PF maintained.

Description : How do you charge a capacitor with a battery?

Last Answer : The  capacitor  is  connected   in  parallel  with   the  battery.

Description : What is the symbol of a capacitor?

Last Answer : symbol of a capacitor

Description : Which side of a capacitor is negative?

Last Answer : In electrolytic type negative is shorter lead and usually mark in the tank. But of course not applicable to non-polar.

Description : does capacitor store energy ?

Last Answer : yes capacitor stores energy

Description : when capacitor act as open circuit?

Last Answer : When a DC is applied to capacitor it acts as open circuit .

Description : which capacitor stores more charge ?

Last Answer : supercapacitor

Description : what does a capacitor do?

Last Answer : It store energy in.the form of charges It allows AC but restricted DC

Description : If you’re charging a cellular phone using a home outlet, wouldn’t the more powerful current charge a phone faster than using a vehicle’s power to charge the same cellular phone?

Last Answer : Do you understand the difference between AC and DC?

Description : Assertion : Current between two points in an electrical always flows from higher potential to lower potential. Reason : During charging of a battery c

Last Answer : Assertion : Current between two points in an electrical always flows from higher potential to lower ... . If both Assertion and Reason are false.

Description : When a battery-charging panel is being used, the batteries will discharge if _____________. A. DC voltage is supplied B. the polarity is reversed C. the voltage fluctuates D. too little current is supplied

Last Answer : Answer: B

Description : When a lead-acid battery begins gassing freely while receiving a normal charge, the charging current should _____________. A. be increased B. remain unchanged C. be decreased D. shut off

Last Answer : Answer: C

Description : When a lead-acid battery begins gassing freely while receiving a normal charge, the charging current should be _____________. A. increased B. shut off C. decreased D. unchanged

Last Answer : Answer: C

Description : When charging a 100 amp-hour lead-acid battery, ___________. A. the temperature of the electrolyte should not be allowed to exceed 90°F B. the charging rate should be no greater than 125% of the ... nearing full charge and it will be necessary to reduce the charging current to a low finishing rate

Last Answer : Answer: C

Description : A nickel-cadmium battery is receiving a normal charge and gases freely. The charging current should _____________. A. be increased B. be decreased C. be cut off and the battery allowed to cool D. remain the same

Last Answer : Answer: D

Description : Why motor starting current is high compared to transformer charging current? 

Last Answer : Transformer charging current is only 1% and that of motor starting current is 30 to 40%. Because of air gap between stator and rotor. If the air gap is more load taking capacity increases and if air gap is less the load taking capacity reduces.  

Description : In cables the charging current (a) lags the voltage by 90° (b) leads the voltage by 90° (c) lags the voltage by 180° (d) leads the voltage by 180°

Last Answer : (b) leads the voltage by 90°

Description : The charging current per kill of the line is?

Last Answer : The charging current per kill of the line is 0.497 Amp.

Description : Which of the device is employed in substation to limit the short circuit current in the power system: a) Shunt condenser b) Reactor c) Series capacitor d) Shunt capacitor

Last Answer : Ans: B

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

Description : The charge build up in a capacitor is due to a) Conduction current density b) Displacement current density c) Polarisation d) Magnetization

Last Answer : b) Displacement current density

Description : The charge build up in the capacitor is due to which quantity? a) Conduction current b) Displacement current c) Convection current d) Direct current

Last Answer : d) Direct current

Description : Does current flow though a capacitor?

Last Answer : No. Current (or more specifically, charge) flows into one plate, and an opposing current (charge) flows out of the other plate, but the current (except for leakage current) does not flow across the dielectric. The result is that there is a charge differential between the plates.

Description : A capacitor and a coil are connected in series. The capacitor is charged and allowed to discharge through the coil. The current that will then flow through the capacitor-coil combination will do ... but diminish steadily to zero z) oscillate at high frequency at first but then at slower frequency  

Last Answer : ANSWER: Y -- OSCILLATE BUT DIMINISH STEADILY TO ZERO

Description : A circuit which employs a DIRECT CURRENT source has a branch which contains a capacitor. After the circuit has reached a steady state, what is the magnitude of the current in the circuit branch which contains the capacitor?

Last Answer : ANSWER: THE CURRENT IS ZERO

Description : What is the phase relationship between the voltage and current in a capacitor? 

Last Answer : ANSWER: X -- CURRENT LEADS BY 90 DEGREES

Description : Does current flow through a capacitor ?

Last Answer : Imagine a pipe with a flexible diaphram in the middle separating two haves of the pipe. Now the pipe is filled with air. If you apply a pressure to one end the diaphram will deform ... capacitor, the effects on electrons will be recreated across the boundary. But theres no electrical connection...

Description : What happens to current flow in a capacitive circuit when the DC voltage across the capacitor is approximately equal to the source voltage?

Last Answer : Capacitor always charges up to the voltage of source. When the capacitor is charged to same as source voltage then there is no current flowing through the capacitor. The current through the capacitor is called displacement current. 

Description : If a capacitance is charged by a square wave current source, then the voltage across the capacitor will be (a) Square wave (b) Step function (c) Triangular wave (d) Zero

Last Answer : If a capacitor is charged by a square wave current source, the voltage across the capacitor is : triangular wave

Description : The reactance offered by a capacitor to an alternating current of frequency 50 Hz is 10 ohm. If frequency is increased to 100 Hz, the reactance will be (a) 2.5 ohm (b) 5.0 ohm (c) 20.0 ohm (d) 40.0 ohm 

Last Answer : Xc = 1/(2*pi*f*c) so when f is double .... Xc will be half ... Ans is 5ohm

Description : A single phase CSI has capacitor C as the load. For a constant source current, the voltage across the capacitor is   (A) square wave (B) triangular wave (C) step function (D) pulsed wave

Last Answer : Step function

Description : When an alternating potential is applied to a capacitor, the current in the circuit will  1. lead the applied potential 2. lag the applied potential 3. be in phase with the applied potential 4. none 

Last Answer : When an alternating potential is applied to a capacitor, the current in the circuit will lead the applied potential