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It is not generally true that current increases when the voltage decreases. Ohms law for a simple resistor says that current is proportional to voltage.
However an electric motor supplying a constant mechanical load power will readjust to a lower supply voltage by drawing more current, although if the voltage is progressively reduced the motor would stall.
Switch-mode power supplies also tend to draw a constant power from the supply when the input voltage changes.
Wiki User
∙ 10y ago
Wiki User
∙ 12y agoI assume that you're talking about power conversion by a transformer. The simple answer is that the power coming out cannot exceed the power coming in and power is equal to current times voltage. Therefore the product of amperage and voltage must remain constant. (Actually, it will be somewhat lower on the output because the transformer will not be 100% efficient.)
Wiki User
∙ 13y agoA: Either voltage or current if not supplied by a constant source will make either one sag
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If voltage changes in a ac circuit what happens to current?
Voltage attempts to make a current flow, and current will flow if the circuit is complete. It is possible to have voltage without current, but current cannot flow without voltage. The answer is "yes",voltage remains the same as current moves through the circuit.As the voltage remains constant, current increases in the circuit.
In a parallel circuit a parallel branch is usually called which current or resistance or voltage path?
A parallel branch is a current path. In general, current follows paths, voltage drops across components, and resistance is the voltage divided by current of specific circuit elements.
Why electric current across a wire drops?
Electric current does not drop. Electric voltage, however, drops across a wire because the wire has non-zero resistance. (Do not confuse electric current with electric voltage - they are not the same.)The reason current does not drop is that, in a series circuit, according to Kirchoff's current law, the current at every point in a series circuit is the same.
When voltage increase then current will be?
it depends on what type of load. Motor amperage will drop off as voltage rises. loads such as lights will increase amperage with voltage rise.
What happens to voltage and current in series circuits?
Kirchoff's voltage law states that the signed sums of the voltage drops in a series circuit add up to zero.Kirchoff's current law states that the current everywhere in a series circuit is the same, more specifically, that the signed sums of the currents entering a node is zero.
Are resistor drops the voltage or current?
Are resistor drops the voltage or current? ANSWER: The voltage DROP is a way to imply that the voltage no matter of the value is what it must be whether it is measured or calculated
Does a resistor drop current or voltage?
A resistor drops both voltage and current, however the term "drop" is generally used to indicate a voltage or current drop across the device, so it is more correctly stated that a resistor drops voltage, by allowing the current in the circuit to decrease.
What does a resistor do in an electric circuit?
Limits current flow and drops voltage.
What does a resistor do in a electrical circuit?
Limits current flow and drops voltage.
Will current increase if the voltage in a circuit is increased?
Ohm's Law states Voltage = Current x Resistance. Hence if voltage is increased and resistance is constant, current will increase proportionally to the rise in voltage.
How does a voltage regulator regulate the voltage output of an ac generator?
Generator output is controlled by voltage feedback to the voltage regulator which senses voltage drop or rise and regulates the current being sent to the armature. This rise and fall of the armature current governs the generators output voltage.
If voltage changes in a ac circuit what happens to current?
Voltage attempts to make a current flow, and current will flow if the circuit is complete. It is possible to have voltage without current, but current cannot flow without voltage. The answer is "yes",voltage remains the same as current moves through the circuit.As the voltage remains constant, current increases in the circuit.
Why phase shift of ce configuration is 180 out of phase while cc has same phase?
In a ce amplifier, an increase of base voltage causes the collector current to rise. This causes an increased voltage drop through the collector load resistor, so the collector voltage drops. With a cc amplifier the increase in current causes more voltage across the emitter load resistor, therefore the emitter voltage rises.
What is the application of kirchoffs voltage law?
Kirchoff's Voltage Law: The sum of the voltage drops across all elements in a series circuit add up to zero. If you know the voltage drops across all but one element, and you know the voltage rise across the source, then you can easily calculate the remaining drop.
Which type of circurt does current flow threw each part of and voltage drops along the way?
I believe you are describing a series circuit. One total current flows through each component, and each component has an associated voltage drop. When all the voltage drops are added together, they should equal the source voltage.
In a parallel circuit a parallel branch is usually called which current or resistance or voltage path?
A parallel branch is a current path. In general, current follows paths, voltage drops across components, and resistance is the voltage divided by current of specific circuit elements.
What are the two rules for the voltage and current in a series circuit?
1) At every point in the circuit, the current is the same. 2) The sum of the voltage drops across each component is zero.
