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What is the result when voltage is multiplied by current?
The result when voltage is multiplied by current is power.
What happens to the electric current in a wire as voltage is increased?
As voltage is increased, the electric current in a wire also increases because the relationship between voltage, current, and resistance is described by Ohm's Law (V = IR). If resistance remains constant, a higher voltage will result in a higher current flowing through the wire.
Does more voltage result in increased power output?
Yes, more voltage can result in increased power output, as power is directly proportional to voltage when considering a constant resistance.
Does higher voltage result in higher current flow?
Yes, higher voltage typically results in higher current flow in a circuit, according to Ohm's Law.
What happens if you touch ininsulated wire?
If you touch an uninsulated wire while it is carrying electricity, you can get an electric shock. This can result in burns, muscle spasms, and even death, depending on the voltage of the electricity. It is important to always assume that all wires are live and take proper precautions when working around them.
Why does the load voltage still goes slightly negative with the freewheel diode conntected?
The load voltage can still go slightly negative with the freewheel diode connected due to the inductive nature of the load. When the power supply is turned off, the inductor generates a back EMF, causing the voltage across the load to drop below zero. The freewheel diode allows current to circulate through the inductor, but it may not fully clamp the voltage to zero, especially if there are any parasitic elements or if the diode has a forward voltage drop. As a result, the voltage can momentarily dip into the negative range.
An inductor is a device that opposes the?
An inductor is a passive electronic component that opposes changes in current flow through it. It accomplishes this by inducing a voltage that is proportional to the rate of change of current passing through it. The main property of an inductor is its inductance, which is a measure of its ability to store energy in a magnetic field. As a result, an inductor opposes changes in current by generating a back electromotive force (EMF) in the opposite direction of the applied voltage. This opposition to changes in current is often referred to as inductive reactance. Specifically, an inductor opposes: Changes in Current: When an electric current through an inductor increases, the inductor creates a magnetic field that stores energy. This energy is released when the current decreases, which opposes the decrease in current. Similarly, when the current decreases, the inductor generates a voltage to maintain the current flow, opposing the change. Alternating Current (AC): In an AC circuit, the current periodically changes direction. An inductor resists these changes and limits the rate at which the current can change. It effectively smoothens out variations in the current and behaves as a low-pass filter, allowing lower frequency components to pass while attenuating higher frequency components. Voltage Transients: Inductors also oppose sudden changes in voltage, commonly known as voltage transients or spikes. When a sudden voltage change occurs, the inductor generates an opposing voltage to mitigate the effect of the transient and limit the rate of change of the current. In practical applications, inductors are used in various electronic systems and devices. They are employed in power supplies, signal filtering circuits, motor control circuits, transformers, and many other applications where controlling current, energy storage, and voltage regulation are important. My recommendation : ђՇՇקร://ฬฬฬ.๔เﻮเรՇ๏гє24.ς๏๓/гє๔เг/372576/๔๏ภﻮรкץ07/
What happens when you halve the resistance in a circuit when voltage remain constant?
Since resistance is the ratio of voltage to current, we can say that halving the resistance will result in twice the current.
Detail of switched mode power supply?
A switched mode (or switching) power supply is one that uses pulse-width modulation technology, rather than linear technology, to provide the voltage required to a load. Often, it requires no power transformer, nor is a great deal of power developed across the power supply, which reduces size, cost, and heat. It works by the fact that inductors resist a change in current. There is a high voltage power supply, often 160VDC running directly off the AC line. A transistor or other switching device supplies power to an inductor, which is in series with the load. There is also a Schottky diode from the input side of the inductor to ground. When the transistor is on, voltage is supplied to the inductor, which supplies current to the load. When the transistor is off, back voltage from the inductor is shunted to ground through the diode, and the inductor continues to supply current to the load. A pulse-width modulator monitors the load voltage, and adjusts the transistor on time at a high frequency. The average current flow, and thus the average load voltage, remain constant. Since the transistor turns on hard - it is in saturation - very little voltage drop is across it. As a result, very little power is developed, resulting in less overall heat.
What is the heat produced by an inductor?
They are called I squared R losses. That is the formula for calculating power (P) in watts. P=I^2*R. I equals current in amps. R equals resistance in ohms. Also if the voltage (E) is known the formula is P=E^2/R. The current of electrons meets the resistance of the coil wire. That results in heat in inductor and transformer coils.
What is the result when voltage is multiplied by current?
The result when voltage is multiplied by current is power.
What is the active power consumed by pure inductive reactance?
The active power of an inductor is zero. As we know, the active power is the result of product of supply voltage and in-phase component of load current. But the load current in pure inductive load lags supply voltage by 90 degrees. So there is no component of load current that is in-phase with the supply voltage. Therefore, the active power in inductive reactance is zero.
What happens to the current if the voltage is reduced by a factor of 3 and the resistance is constant?
Ohm's Law: V = I*R, so Voltage and Current are directly proportional and a change in voltage will result in a proportional change in current. (The current reduces by the same factor)
What happens to the current in a circuit as a capacitor charges?
What happens to the current in a circuit as a capacitor charges depends on the circuit. As a capacitor charges, the voltage drop across it increases. In a typical circuit with a constant voltage source and a resistor charging the capacitor, then the current in the circuit will decrease logarithmically over time as the capacitor charges, with the end result that the current is zero, and the voltage across the capacitor is the same as the voltage source.
What happens to the electric current in a wire as voltage is increased?
As voltage is increased, the electric current in a wire also increases because the relationship between voltage, current, and resistance is described by Ohm's Law (V = IR). If resistance remains constant, a higher voltage will result in a higher current flowing through the wire.
Does more voltage result in increased power output?
Yes, more voltage can result in increased power output, as power is directly proportional to voltage when considering a constant resistance.
What is a serial resonant circuit?
A series resonant circuit is one in which the inductive and capacitive reactance are equal in magnitude. Since the signs of the vectors of their reactance are opposite, they cancel and so leave only the resistance of the series circuit at the resonant frequency. Because reactance of a capacitor is inversely related to frequency, and the reactance of an inductor is directly related to frequency, this happens at a particular frequency dependent on the values of capacitance and inductance. You see, when you apply a sine wave to an inductor, the current lags behind the voltage by 90 degrees. Or you may look at it as the voltage leading the current by 90 degrees. But when a sine wave is applied to a capacitor, the reverse is true. Current leads voltage by 90 degrees. Or voltage lags behind current by 90 degrees. Put a capacitor and inductor in series and input a sine wave of current at the frequency at which both have the same amount of reactance. Current is equal in magnitude and phase everywhere in a series circuit. Voltage dropped across the inductor is 90 degrees ahead of the current, while voltage dropped across the capacitor is 90 degrees behind the current. This puts the voltage drops 180 degrees out of phase with each other. Because the applied frequency is the one at which the reactance of each component is equal in magnitude, the voltage drops are also equal in magnitude so they sum to zero volts. Zero volts at any current is zero ohms (Ohm's law, R = E/I). In the real world, both parts have resistance or a series resistor may be part of the design. But the end result is that impedance of the series circuit is lowest at the resonant frequency.
