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A battery has emf of 6 v and an internal resistance of 4 ohm it is connected to a 2.6 ohm resistor a switch when switch is open the potential difference between the terminals of a battery is?
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∙ 8y ago
6 volts
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∙ 8y ago
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Why voltage measured at terminals of battery to which load is connected is always lower than open circuit voltage?
Real-world batteries do not have zero internal resistance. When one connects a load (resistance) to a battery, current begins to flow and the open-circuit potential is divided between the battery's internal resistance and the resistance of the load. Thus, one will measure a lower voltage at the battery terminals when a load is connected, compared to no-load conditions.
A wire with resistance R is connected to the terminals of a 30 V battery. What is the current through the wire if the wire has the resistance?
Your current will be 30/R Amps. Where R is the resistance in Ohms.
What is the function of a variable resister in an electrical circuit?
A variable resistor usually has three terminals, one of which is connected to the 'wiper' by which means its resistance is measured. By using all three terminals, we can control the potential difference in a circuit. When used in this way, we call the variable resistor a 'potentiometer'. By using two of the three terminals, one of which must be connected to the variable wiper, we can control the current passing through circuit. When used in this way, we call the variable resistor a 'rheostat'.
How is a series circuit different to a parell circuit?
The difference between a series and parallel circuit is that a series circuit is connected in such a way that the same current intensity flows through the elements while a parallel circuit is connected in such a way that the same potential appears across their terminals.
What is the difference between voltage and emf?
E.M.F: Is the potential difference between two terminals when there is no current i.e. circuit is open, therefore [EMF = OCV].OCV :open circuit voltage.Voltage: Is the potential difference between two terminals when there is current i.e. closed loopAnswerAn e.m.f. (electromotive force) is a voltage or, more accurately, a potential difference ('voltage' is simply another word for 'potential difference'). However, it is the potential difference that appears across the terminals of a supply when it is not connected to its load. When the supply is connected to a load, this potential difference falls because of an internal voltage drop across the supply's internal resistance. So the simple answer is that an electromotive force is a supply's open-circuit terminal voltage.Another definition is obtained from Kirchhoff's Voltage Law, from which we can say that an electromotive force is equal to the sum of all the all the voltage drops around the circuit, including its internal voltage drops.
What is the function of a resister in an electric circuit?
A variable resistor usually has three terminals, one of which is connected to the 'wiper' by which means its resistance is measured. By using all three terminals, we can control the potential difference in a circuit. When used in this way, we call the variable resistor a 'potentiometer'. By using two of the three terminals, one of which must be connected to the variable wiper, we can control the current passing through circuit. When used in this way, we call the variable resistor a 'rheostat'.
Why voltage measured at terminals of battery to which load is connected is always lower than open circuit voltage?
Real-world batteries do not have zero internal resistance. When one connects a load (resistance) to a battery, current begins to flow and the open-circuit potential is divided between the battery's internal resistance and the resistance of the load. Thus, one will measure a lower voltage at the battery terminals when a load is connected, compared to no-load conditions.
Is the potential difference between the terminals of a cell in a circuit fixed or does it depend on the components that are connected in the circuit?
All cells have internal resistance. The value is very small when the cell is fresh. The value increases slightly and slowly as the cell discharges. So the potential difference across the cell will not noticeably change when a load is initially connected. As the cell becomes more discharged, the drop in potential difference upon connecting a load will increase. The point at which the cell is no longer any use depends on the minimum voltage which the load requires, and the current required by it.
What does a battery create between terminals?
Potential difference (voltage)
What is the potential difference across the terminals of a battery?
Please share your answer?
It has a potential difference between the positive and negative terminals?
It is a battery.
What is practical voltage source?
in case of ideal voltage source we consider the internal resistance to be zero.but in practical,every battery has some internal resistance then if you connect a load resistance across the terminals of that source,the net potential difference's across the voltage source will be a function of external resistance connects it won't give constant voltage across it's terminals.
What is the difference between short to Battery and Open Load?
Related to a battery and open load is the battery just sitting there without anything connected. A short is a very low resistance attached to the tow terminals of the battery. For example, a wire connected across the battery terminals would constitute a short.
What is 1000 ohms?
"1,000 ohms" is the resistance of anything through which the current, expressed in amperes, is numerically equal to 0.001 times the potential difference between its terminals, expressed in volts.
A cell of emf E volt and its internal resistance is 'r' ohm. The cell is connected to a load of 'R' ohm. The potential difference across the terminals of the cell is?
The resistance is equally proportionate to "r" in the case that it is above 1. Assuming "r" is greater than 1, the resistance is 4/3 multiplied by omega (the equal proportionate value for mass times ohms). If "r" is less than or equal to 1, there is no resistance.
Why is there no flow of electric current between 2 objects of equal resistance?
I am not sure how the two objects of equal resistance are supposed to be connected. But for a current to flow, for example across a resistor, there must be a voltage difference between the terminals of this resistor.
What complete path is formed when a wire connected to both terminals of an electrical source?
Potential energy
