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What happens to current in a circuit if the voltage is halved and the resistance stays the same?
the current doubles.. explanation:V=IR hence I=V/R which means that when the supply voltage is constant ,current is inversely proportional to resistance.thus the current doubles. practically speaking when the resistance of the load(fan ,bulb,refrigerator,....) is less ,it draws more current from the source so as to balance the voltage across it.i.e; to maintain the voltage across it as constant. This answer is absolutely correct if you assume that the current comes from a pure voltage source ( voltage source with zero internal resistance). At the other extreme you could have a current source (such as a very large voltage source in series with a very large resistor), and then the current is practically independent of changes if the external resistance is changed (because the change represents a relatively minute change in the overall resistance). With appropriate circuitry it is possible to devise a situation where the current is practically independent of the changing resistance.
How does Si diode work?
Crystal diode for a p-type semiconductor and n-type semiconductor formation of the pn junction, in its interface on both sides of a space-charge layer, and has a self-built electric field. When there is no applied voltage, as pn junction on both sides of carrier concentration caused by the proliferation of poor self-built electric current and drift arising from the current equivalent and the balance of power in the state. When the outside world a positive bias voltage, electric and outside the field of mutual self-suppression role of the Consumers carrier increase from the current spread of the forward current. When the outside world a reverse bias voltage, external electric field and to further strengthen self-built electric field, in a certain form of reverse voltage and reverse bias voltage value unrelated to reverse saturated current I0. When the reverse voltage applied to a certain high level, pn junction in the space charge of the electric field strength to achieve the critical values of the double-carrier process, a large amount of electronic hole right, had a great numerical breakdown of the reverse current, Breakdown phenomenon known as diodes.
Can a 3 phase commercial electric grill be used on single phase 120 with a converter?
Very unlikely. Its 3 phase for a reason, it needs a large voltage/current to power it, single phase won't provide that.
Is watching a television current or static electricity?
The operation of the television, as all electronics, involves electric currents. If your TV uses a CRT display as it operates it happens to build a large static electric field on its face, as a side effect of that operation.
Apart from transformers what other instrument can you use to step down voltage?
resistors - and they have to be physically large enought to dissipate the heat of the voltage x current you will drop out.
What happens to a person when a large electric current goes through them?
They get electricuted.
What is meany by resistor?
Resistor is a component of an electric circuit that resist the flow of direct or alternating electric current . It can also limit or divide the current, reduce the voltage, protect an electric circuit, or provide large amounts of heat or light.
What makes small and large electric currents?
The combination of supply voltage and load. For any given supply voltage, the greater the load (i.e. the lower its resistance), the greater the resulting current.
Disconnect a small-voltage battery from a coil of many loops of wire and a large voltage is produced by?
This phenomenon is known as electromagnetic induction. When a magnetic field created by current flowing through the coil is suddenly disrupted by disconnecting the battery, it induces a large voltage in the coil according to Faraday's law of electromagnetic induction. This sudden change in magnetic field generates an electric current in the coil that produces the high voltage.
How do you make current transformers to saturate?
Over voltage, severe under frequency, or add too large of a secondary burden (the last is what typically happens).
What will induce an electric current in a wire?
There are two ways of doing this; 1) moving a magnet perpendicular(at right angles) to a coil of wire 2) placing a coil of wire in close proximity to another coil carrying an AC current.
What happens to current in a circuit if the voltage is halved and the resistance stays the same?
the current doubles.. explanation:V=IR hence I=V/R which means that when the supply voltage is constant ,current is inversely proportional to resistance.thus the current doubles. practically speaking when the resistance of the load(fan ,bulb,refrigerator,....) is less ,it draws more current from the source so as to balance the voltage across it.i.e; to maintain the voltage across it as constant. This answer is absolutely correct if you assume that the current comes from a pure voltage source ( voltage source with zero internal resistance). At the other extreme you could have a current source (such as a very large voltage source in series with a very large resistor), and then the current is practically independent of changes if the external resistance is changed (because the change represents a relatively minute change in the overall resistance). With appropriate circuitry it is possible to devise a situation where the current is practically independent of the changing resistance.
Does the current lead or lag the voltage in a series A C circuit containing a large value of capacitance?
ICE current leads the voltage by 90 degrees.
How does Si diode work?
Crystal diode for a p-type semiconductor and n-type semiconductor formation of the pn junction, in its interface on both sides of a space-charge layer, and has a self-built electric field. When there is no applied voltage, as pn junction on both sides of carrier concentration caused by the proliferation of poor self-built electric current and drift arising from the current equivalent and the balance of power in the state. When the outside world a positive bias voltage, electric and outside the field of mutual self-suppression role of the Consumers carrier increase from the current spread of the forward current. When the outside world a reverse bias voltage, external electric field and to further strengthen self-built electric field, in a certain form of reverse voltage and reverse bias voltage value unrelated to reverse saturated current I0. When the reverse voltage applied to a certain high level, pn junction in the space charge of the electric field strength to achieve the critical values of the double-carrier process, a large amount of electronic hole right, had a great numerical breakdown of the reverse current, Breakdown phenomenon known as diodes.
Can inserting a resistor in a circuit have an effect similar to an open circuit?
If the resistance is large enough, then there might not be enough voltage difference to allow much current. Since, Voltage = Current * Resistance, if resistance goes really large, and your voltage doesn't change, your current must decrease. An open circuit is where you do not have any current flowing, so whether no current verses very little current is the same is up to you.
What does the word conducting in relation to electricity mean?
A conductor of electricity is one that will carry electric current, without generating undue heat or causing a large voltage drop along it. Copper is a good example.
Is electrons moving through a copper wire an example of electric current?
Yes it is, when there's a large-scale average motion in one direction due to a voltage between the ends of the wire, and not just the random thermal motion in a piece of wire in the back of a drawer somewhere.
