Can potential difference be opposite in direction to emf?
Yes, when an external source is forcing a stronger voltage in the opposite direction.
Can the potential difference across the terminals of the battery be equal to its emf?
“The potential difference between the terminals of a battery will equal the emf of the battery when there is no current in the battery. The terminal voltage will exceed the emf of the battery when current is driven backward through the battery, in at its positive terminal and out at its negative terminal.”
What is the potential difference between the terminals of the battery?
The potential difference between the terminals of a battery of emf 10 V and internal resistance 1Ω drops to 9.8 V when connected across an external resistance.
Does the potential difference between the two terminals of the battery correspond to an electric field anywhere?
Yes, there is always an electric field around a battery, even when nothing is connected to the battery.
Can the potential difference across a battery?
The potential difference across a battery cannot be greater than its emf. When the same battery is connected to an electric circuit, current flows in the closed circuit. When current flows, the potential difference across the terminals of the battery is decreased as some potential drop due to its internal resistance.
Under what circumstances are the potential difference between the terminals of a battery and the emf of the battery equal to each other?
When the internal resistance of battery is zero, the potential difference is equal to emf.
What is the potential difference between the terminals of the battery if 250 joule of work is required to transfer 20 C of charge from one terminal of the battery to other?
Hence the Potential difference flowing between the terminals of a battery when 250J of work is done to move a charge of 20C is 12.5V.
What do you understand by the term potential difference?
Definition of potential difference : the difference in potential between two points that represents the work involved or the energy released in the transfer of a unit quantity of electricity from one point to the other.
What is difference between electric potential and potential difference?
Answer: Electric Potential is the work done per unit charge in order to bring the charge from infinity to a point in electric field while Electric potential difference is the Potential developed while moving a charge from one point to another in the field itself.
What causes the potential difference between the two terminals of a cell?
the flow of current or charge causes the potential difference between the two terminals of a cell…
When the switch is closed the potential difference between the terminals of the battery is in volts?
you have that the ideal voltage source always assures the 60 Volts potential difference between its terminals, regardless if the switch is open or closed.
How does a battery create potential difference?
Inside a battery, electrons have been chemically removed from atoms. The electrons are stored at the negative terminal of the battery and the positive ions at the positive terminal, so there is a potential difference between the two ends.
What is the potential difference between the terminals of a battery?
“potential difference” and “emf” are just different words for “voltage”. Those words refer to the same measurement between two terminals. If you are asking whether the voltage between the terminals may be different than the total electrochemical cell potential of the battery – yes, of course.
Can the potential difference between the terminals of a battery exceed EMF?
Due to internal resistance the potential difference at the terminals can be lower than the EMF when there is a load on the battery. Originally Answered: Is there any circumstance in which the measured potential difference between the terminals of a battery exceeds the open circuit emf of the battery?
What are the potential difference and shunt impedances of battery?
The battery has intrinsic series and shunt impedances that represent the condition of the battery, age, state of charge, self discharge, leakage, contamination, connectors, external monitoring, safety circuits and so on. “potential difference” and “emf” are just different words for “voltage”.
Why does the current in a new battery become negative?
When another cell with higher emf (electromotive force) is connected in oposite direction with the main battery the new battery produces a current in opposite direction ……so the current in the previous battery becomes negative. If you get any problem you can contact me at [email protected]