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A 10 uF and a 30uF are placed in parallel. What is the resulting capacitance?
Total parallel capacitance is the sum of the value of the parallel capacitors. It uses the formula - Total Capacitance = C1 + C2 + C3. Hopefully, you can do the math at this point.
An air-filled parallel-plate capacitor is connected to a battery and allowed to charge up Now a slab of dielectric material is placed between the plates of the capacitor while the capacitor is still?
the charge on the capacitor had increased.
What is the function of capacitor across the supply to the fluorescent lamp when it is used?
A capacitor is placed across the supply of a fluorescent lamp circuit to correct the power factor
Should an ammeter always be connected in parallel with a component?
No, an ammeter should never be placed in parallel with a component - it should always be placed in series, so that the current through the component is measured.If you place an ammeter in parallel with a component, you create a short circuit around the component. Depending on the rest of the circuit, you could damage the circuit, damage the ammeter, create a fire, etc. You certainly will affect the current through the component, and that is not what you want to accomplish.
How do you discharge 25 Kvar capacitor in 690Volt system?
This capacitor carries a current of 25,000/690 or 36.2 amps and its impedance (reactance) is 19 ohms. The capacitance is 1/(2.pi.50.19) or 0.000167 Farad, on a 50 Hz system. The time-constant is CR so that if a 20,000 ohm resistor is placed across the capacitor the time-constant is 3.3 seconds. The voltage is reduced by 99% after 5 time-constants or in this case 17 seconds. If the discharge resistor is permanently in circuit it dissipates 690^2 / 20000 or 24 watts.
What will the affect of capacitance of a capacitor when a conductor is placed between a capacitor?
capacitance will tend to zero
A 10 uF and a 30uF are placed in parallel. What is the resulting capacitance?
Total parallel capacitance is the sum of the value of the parallel capacitors. It uses the formula - Total Capacitance = C1 + C2 + C3. Hopefully, you can do the math at this point.
Will capacitence be increased with increase in the charges?
Definitely not possible. Capacitance is given by an expression C = epsilon x A / d Since charge is not present the capacitance cannot be increased or decreased by the charge placed
What is cylindrical capacitor?
A cylindrical capacitor is a type capacitor in which two conducting cylinders are used and the dielectric medium is placed in between them .The outer most cylinder is earthed .The capacitance of these capacitors are higher than other
What to expect if a resistor is placed in a dc circuit with a capacitor?
when we replace the resistor with a capacitor ,the current will flow until the capacitor charge when capacitor will fully charged there is no current through the circuit because now capacitor will act like an open circuit. for more info plz E-mailt me at "zaib.zafar@yahoo.com"
What is the voltage obtained when a capacitor is placed in a dc circuit?
Eventually, the capacitor will charge to approximately the source voltage level. As this occurs, the current in the circuit will drop to near zero.
What is starting capacitor and run capacitor?
A starting cap is placed in circuit of the start windings only when the motor is starting and is normally of a higher capacitance than a running cap, in the region of 70 - 120 mf, where a running cap stay connected with the start windings of the motor and is normally an 8 mf cap.
Are all electrolytic capacitors the same?
Type your answer here... As per the definition of capacitor it is a device which made up of dielectric material in between two parallel metal plates. Even two metal plates placed parallel in open area will result in capacitance since air is also dielectric in nature..
An air-filled parallel-plate capacitor is connected to a battery and allowed to charge up Now a slab of dielectric material is placed between the plates of the capacitor while the capacitor is still?
the charge on the capacitor had increased.
What is the function of capacitor across the supply to the fluorescent lamp when it is used?
A capacitor is placed across the supply of a fluorescent lamp circuit to correct the power factor
How a trimmer capacitor use?
A trimmer capacitor is a semi-adjustable capacitor placed across a variable tuning capacitor and pre-set to allow the main capacitor to track correctly with another variable capacitor on the same shaft. The adjustment takes out any differences introduced by the connected circuit.
Do lights get dimmer when they are placed in a series circuit or a parallel circuit?
um.. a switch is a part of a series circuit because parallel circuits don't have switches
