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It will limit the amount of circulating current that will develop in the core if you have an inadvertent core ground.

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Q: Why add a resistor in a core ground circuit?
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Related questions

When you add a resistor to a series circuit what will happen to the total current?

increase.


What happens in a series circuit if the resistance is halved?

If you add a second resistor, the resistance of series circuit will increase.


What if you were to add a resistor to a series circuit that include a light bulb?

A resistor slows the flow of electricity, and converts the electrical energy into heat. You don't WANT heat - you want LIGHT, so we generally do not put resistors in lighting circuits. If there is a resistor in the circuit, it will cause some of the energy that would normally be converted to light to be converted into heat instead, so the light bulb will glow less brightly. A variable resistor in such a circuit is sometimes called a "dimmer".


What is the strength of current in each resistor of a series circuit?

The current in each resistor in a series circuit is the same. Kirchoff's Current Law states that the sum of the currents entering a node must add up to zero. The connection between two resistors in a series circuit is a node. The current entering the node from one resistor is equal to the current leaving the node into the next resistor.


A series circuit has individual resistor values of 200 ohms 86 ohms 91 ohms 180 ohms and 150 ohms What is the total resistance of the circuit?

In a series circuits, you simply add the the values of each resistor and that is you answer. i.e. - 200 + 86 + 91 + 180 + 150 = 707 ohms


What happens when you add a resistor to a series circuit with a light bulb?

As you add more bulbs to a series circuit that means that the bulbs are in series to one another, therefore the total resistance is the sum of the individual resistance of the bulbs. If you add bulbs of the same resistance,then the rate at which the resistance changes will increase in a constant manner provided the current source is not altered. For instance if the bulb you are using is rated 20v,60w, then the current passing via the bulbs in series is the square of the voltage divided by the power in this case the current is approximately 7amperes.


What is defected ground structure?

A: When all circuit do not exactly tie into a common point. This situation is called daisy chain whereby a ground will add or subtract to influence all circuitry's


Why doesn't current decrease in series resistance circuit though resistance opposes current?

If you add another resistor or just increase the resistance the current will decrease. I think the statement you are talking about means that whatever the current is in the series circuit it will be the same everywhere in that circuit, on both sides of the resistance. The resistance lowers the current in the entire circuit, not just after the resistance.


Why does the total circuit decrease when more devices are added to a parallel circuit?

This is a direct consequence of Ohms Law. Since each new resistor connected in parallel will allow more current to flow, the resistance of the circuit must be lower. R = E/I. Since I (current) has increased, and the voltage E is still the same, it follows that R (resistance) must be smaller. That's the way Ohms Law works.


How do you increase resistance?

Since resistance is the ratio of voltage to current, if the voltage is constant then increasing the resistance will result in a reduction in current.


How do you connect an LED into a circuit?

A: Add the proper resistor in series with the LED. What resistor? Simple 10volts source minus the LED source divided by the 20ma current that should be flowing gives you the resistor 10-1.8=8.2/.02=900 ohms. The 1.8 can be anything it is up to the LED voltage drop. LONG LEAD IS POSITIVE SHORT IS NEGATIVE SINCE IT IS A DIODE


What is the current flow in a 12VDC circuit with two 24 ohm resistors in parallel?

In a parallel circuit, the same (supply) voltage will appear across each branch. So, in your example, 12 V will appear across each of the 24-ohm resistors. To find the current through each resistor, then, you simply divide the supply voltage by the value of that resistor. Since the supply current is the sum of the two branch currents, to find the supply current, you simply add together the currents passing through each resistor.