how do you know how much volts and amps will come out of an inductor (depending on the joules it has)?

Question

remember the inductor is in a dc current circuit and how do you figure out how much volts the thing will discharge based on the stored energy it has

Answer 1

You can't know this. There is no way to determine the voltage and current without further information.

The voltage generated by collapsing the magnetic field that holds the energy of an inductor is the product of the inductance, measured in henries, and the time rate of change of the current, measured in amperes per second: V = L di/dt, where V is in volts, L is in henries, and di/dt is the derivative of the current with respect to time.

This is the basic operating principle of the induction coil. Connect a large inductance, say one henry, in series with a 1.5 volt dry cell battery. Now open the connection to the battery and observe the spark that results. Depending on how fast the current decays, several hundreds or perhaps even thousands of volts will appear across the terminals of the inductor.

Connect one terminal of the dry cell directly to the inductor, and then use two wires that have the insulation removed from their ends to connect the other terminal of the dry cell to the other terminal of the inductor, using the free ends of the two wires as a "switch" by momentarily touching them together to "charge" the inductor with current. When you "open" the switch, you will see a fat spark momentarily appear between the two wire ends.

Do not hold the bare ends of the wires in your hands as you separate the wires to open the circuit to the dry cell; there is enough energy in the inductor to cause a nasty shock.

You can visually see this by wiring a small neon lamp in parallel with the inductor. With the circuit to the battery closed, the lamp does not light because 1.5 volts is not enough to ionize the neon gas in the lamp. When the circuit to the battery is opened, the neon lamp will flash briefly as the energy stored in the inductor is converted to current flowing in the lamp. Clearly the voltage developed must exceed the ionization voltage of the lamp, which is about 90 volts or so.

Answer 2

The energy stored in an inductor's magnetic field is equal to 0.5*L*I^2. The I/V relationship for an inductor is V = L*dI/dt. So, the voltage produced across an inductor depends on the rate of change in current, which depends on the voltage value and the rest of the circuit. You need to solve a differential equation to find the peak voltage value.

Answer 3

properly... assessment between quotes, voltage, and so on. with warmth and temperature could be problematical, yet here you have it: Temperature is an on the spot length of the warmth in a physique. Voltage is a level of the version of electric powered skill of a physique... regarding a distinctive. finished value, measured via the unit 'coulombs' is absolute and does not could be regarding a distinctive physique. So is warmth interior the physique. warmth could be an oblique degree of the excellent volume of power, yet a undeniable physique can very own warmth AND different variety of power (skill, cinetic). Amperes are a skill to degree the fee of circulate of the fee, from one factor to a distinctive. In you assessment, amperes might desire to be resembling the 'fee of warmth loss'. in one case, is coulombs/2nd, in the different could be BTU's/2nd. Watts are instruments that degree the potential of a physique to offer, or use, power according to time unit. on your occasion you ought to use 'energy' or 'BTU's' according to 2nd. in actuality, the two are a level of power and warmth. Farads have not got an equivalent in thermodynamics.