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Is a battery provides not a source of constant current or a source of constant voltage?
Wiki User
∙ 10y ago
Batteries will provide a source of constant voltage. A battery also can be used to produce an electrical current immediately upon a necessary connection.
Wiki User
∙ 10y ago
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What is a current source?
A current source is a source that we can draw current from and can regulate to control the amount of current we draw. It is kind of a "mirror" of the voltage source. Here's how it might work. We usually are interested in keeping the current constant when we use a current source (though not always). To do this takes a varying voltage source to keep that current constant when using the source with a dynamic load (a load that is changing). There will have to be a way for the source to sense current flow and compare it to the setting put in. That way the source can maintain that constant current by adjusting to the correct voltage needed to maintain it. Many battery charging applications require this technology. We want "maximum" current so we can quickly charge the battery, but we cannot "overload" the battery, so we have to be careful not to do that. A constant current source is the answer. It will supply a steady "maximum" current, and the source will (as the battery charges and the "resistance to more charge" increases) increase in voltage to keep that amount of current flowing into the battery to charge it in the shortest time. A VERY GOOD EXPLANATION and I could add that a perfect current source would have 0 (zero) input/output impedance or you could say it's would be more like "a short that provides power".
What type of circuit in which voltage is constant?
A mercury battery will provide constant voltage. A voltage regulator circuit will also.
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.
What is meant by floating voltage source in the DC voltage system?
In battery technology, Float voltage is the constant voltage that is applied continuously to a voltaic cell under float operation. The voltage could be held constant for the entire duration of the cell's operation (such as in the SLI battery) or could be held for a particular phase of charging by the charger.
What does voltage current mean?
V=IR, voltage is directly propostional to current and resistance (by ohm's law).CommentVoltage is not 'proportional to resistance'. Resistance is a constant, and is not affected by voltage at all.
Do you agree or disagree with your lab partner who says a battery provides not a source of constant current but a source of constant voltage?
agree
How does the changing the battery voltage affect the current?
If voltage varies then current varies with constant resistance.
What does the voltage regulator on a jet ski do?
A voltage regulator regulates and provides the necessary amperage (from the alternator or stator charging system) the vehicles uses and maintins a constant battery voltage.
Do batteries provide a DC voltage or an AC voltage?
Batteries produce DC because the potential difference is determined by the chemical reaction inside the battery. This voltage is constant.
What is a current source?
A current source is a source that we can draw current from and can regulate to control the amount of current we draw. It is kind of a "mirror" of the voltage source. Here's how it might work. We usually are interested in keeping the current constant when we use a current source (though not always). To do this takes a varying voltage source to keep that current constant when using the source with a dynamic load (a load that is changing). There will have to be a way for the source to sense current flow and compare it to the setting put in. That way the source can maintain that constant current by adjusting to the correct voltage needed to maintain it. Many battery charging applications require this technology. We want "maximum" current so we can quickly charge the battery, but we cannot "overload" the battery, so we have to be careful not to do that. A constant current source is the answer. It will supply a steady "maximum" current, and the source will (as the battery charges and the "resistance to more charge" increases) increase in voltage to keep that amount of current flowing into the battery to charge it in the shortest time. A VERY GOOD EXPLANATION and I could add that a perfect current source would have 0 (zero) input/output impedance or you could say it's would be more like "a short that provides power".
What type of electrical current does a notebook require and what device provides this current?
A notebook computer generally requires direct current. This current comes from a battery or a power supply. A battery converts chemicals into electricity, while a power supply or battery charger converts somewhat high voltage alternating current into lower voltage direct current.
How is battery voltage related to electrical energy?
Voltage is the amount of energy in each coulomb of charge that passes through the battery. This means that the energy is the voltage times the time-integral of the current. For a constant current: E = V I t Where E = Energy in Joules V = Voltage in Volts I = Current in Amps t = time in seconds
What type of circuit in which voltage is constant?
A mercury battery will provide constant voltage. A voltage regulator circuit will also.
What is the output impedance of a constant voltage source and constant current source?
The output impedance is z= V/I, the ratio of the constant voltage and the constant current source.
How does voltage change in relation to current assuming that resistance remains constant?
Ohm's Law: voltage = current * resistance. If resistance is a constant, then voltage is directly proportional to current.
What happens to the current when the voltage is doubled and the resistance is constant?
I = E/R If resistance is constant, then current is directly proportional to voltage. Double the voltage ===> the current will also double.
The independent variable for a battery?
Its voltage remains constant unless loaded. The current available goes down as it is used up.
