0
To what potential should you charge a 4.0 mu rmF capacitor to store 3.0 J of energy?
Wiki User
∙ 12y ago
This is a fairly simple question. You just need the right equation.
uc=1/2 * C(V)2
uc is the energy in joules
C is the capacitance in farads
V is voltage (in this case you solve the equation for V)
Hope this helps
AnswerA capacitor's voltage is limited by the strength of its dielectric, so too much voltage will break down the dielectric.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
Is activation energy added or just there?
Activation energy is the amount of energy that should be gained by potential reactants, for a reaction to occur. A reaction can be occurred by reducing the activation energy of the reaction or increasing the activation energy of the reactants. Activation energy should be added.
Before using a recovery unit to remove a charge what steps should be taken?
What steps should be taken before using a recovery unit to remove a charge?
Which alternative energy source do you think should developed in the future explain.?
I consider that the nuclear energy is a chance for the future.
Is the potential difference across an electric circuit with no element drawing current from it the same at every pt?
there should not be any diff.because
When pressurizing a refrigeration system with nitrogen what rule should you always follow?
charge through a pressure regulator
When a battery is connected with a capacitor the potential difference will?
Charge the capacitor. Potential difference is a scientific term for what is more commonly called voltage. ANSWER: If big enough the battery will see a short initially and then proceed to charge the capacitor at a rate of 63% of the voltage in one time constant defined as RC For engineering purposes after 5 time the time constant the battery will and the capacitor zero potential different. The proper term should be virtual no difference.
What are some factors that affect potential energy?
(Gravitational) potential energy = mgh (mass x gravity x height). Those are the three factors. In standard units (SI), mass is given in kg., gravity is around 9.8 meter / second square, and the height should be given in meters.
Does an electric capacitor store electric charge?
Capacitors store energy in the electric field between their plates. They do not store charge, the net value of which is the same after, as before, charging (they do, however, separate charge).
What potential (voltage) exists between two power supply terminals if 5 joules of energy are required to move 10 coulombs of charge between the two terminals?
Half a volt, because the energy is the charge times the potential difference.Another AnswerYou should be asking what the 'potential difference' is between the two terminals, not the 'potential'. Note that 'voltage' is another term for potential difference.
Does the charge that flows into the capacitor during the charging process go all the way through the capacitor and back to the battery's or does it get stored somewhere in the capacitor?
A capacitor stores electrical charge. When the device is shut off, the charge will - over time - slowly bleed off. But immediately after shutdown, the charge is still present in the capacitor. In large capacitors, such as those found in air conditioning units, older style televisions, and microwave ovens, the stored charge can be strong enough to be potentially lethal. Service technicians have safe procedures for bleeding off the capacitor charge, but those not knowledgeable about electrical systems should not touch a chassis of above-mentioned items, even if shut off and unplugged. Stickers that say "Danger - High Voltage" mean exactly what they say.Another AnswerA capacitor does NOT store charge; it stores energy.The net charge on the plates of a capacitor is no different whether it is 'fully charged' or 'fully discharged'. It does not take charge from the supply and store it on its plates! It simply allows electrons from one plate to be transferred to the other, so there is no change in the overall amount of charge.What it does do is to store energy, expressed in joules.
As capacitance means the ability of storing charge then its unit should be Joule then why you called its unit farad?
I hear you saying that "joule" should be a unit of "ability"; that's pretty slippery."Joule" is a unit of energy. The capacitor does store energy.The energy stored in a capacitor is [ 1/2 C V2 ], measured in joules.' C ' is the capacitance, in farads.' V ' is the voltage across the capacitor, in volts.You can see that a larger capacitance (more farads), when charged to a smaller voltage,stores the same amount of energy. So the joules of energy stored in the capacitordepends on the capacitance and the voltage across it.The same energy can be stored in capacitors with different values of capacitance.In fact, the same capacitor can store different amountsof energy ... more or less joulesat different times.
Why should you discharge the capacitor before measuring the capacitance?
If you don't it could fry your equipment. A capacitor can hold a charge for anextremely long time even years depending on the physical size and capacitance. It can hold a strong enough charge to kill.
What should be pressures for 3 phase condenser?
Pressure is equal to voltage and is the potential deference between the capacitor two terminals
What is insulation resistance in capacitor?
ideally there will not be any resistance to the capacitor,so at this condition it should not not discharge the stored energy. but practically small resistance will be there in the capacitor so the energy stored by the capacitor will be discharged through resistance.
Why should a capacitor never be held by its leads?
A capacitor is designed to store energy over time and then release it nearly instantaneously. If you are holding it by its leads it could discharge and kill you.
What energy do we give to a strong if we stretch it?
It should be string. That is elastic potential energy
What type of energy is stored in thermal energy-kinetic or potential energy?
It consist both, the kinetic as well as potential energy. Justification: As per potential energy formula mgh m-mass in kg g- Acceleration due to gravity h - Height if any of the above parameters does not have zero value then their should be a potential energy. Kinetic energy does exist.
