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How does the EMF of a battery which is made up of cells in series compare with the EMF of the individual cell?
The EMF of a battery made up of cells in series is equal to the sum of the EMFs of the individual cells. When cells are connected in series, their voltages add up. For example, if you have two 1.5V cells in series, the total EMF of the battery would be 3V.
What is electrode potential and EMF of galvanic cell?
Electrode potential refers to the voltage developed at an electrode when it is immersed in an electrolyte solution, reflecting its tendency to gain or lose electrons. In a galvanic cell, the electromotive force (EMF) is the overall voltage generated by the cell, which is the difference between the electrode potentials of the two half-cells (anode and cathode). The EMF indicates the cell's ability to drive an electrochemical reaction and can be measured under standard conditions. A higher EMF implies a greater tendency for the cell to produce electrical energy.
Will the emf of battery vary with size?
The electromotive force (emf) of a battery is primarily determined by its chemical composition and the electrochemical reactions occurring within it, rather than its size. While larger batteries may have greater capacity and deliver more current, the emf itself remains largely constant for a given type of battery. Therefore, two batteries of different sizes but of the same type will typically have the same emf. However, size can influence other factors like internal resistance and overall performance.
What does the emf equation of asingle phase transformer do?
The emf equation of signal phase transform
How do you calculate total emf in series connecte cells?
With cells connected in series, the total emf of the 'stack' is simply the sum of the individual emf's of the individual cells. -- Even if one cell is connected backwards in the string. Then its emf is considered negative when the sum is being performed. -- All of this is true only as long as there is no external connection between the ends of the stack, you're measuring the emf on an 'open-circuit' basis with a voltmeter, and the cells are not providing any current to an external circuit. Once the series combination of cells is connected to an external circuit and begins to produce current, the total emf at the terminals of the stack will decrease. It'll depend on the magnitude of the current, and on the 'internal impedance' of each cell. If the cells are not precisely identical and in identical states of charge, then a calculation of the total emf is virtually impossible.
Why emf does not depend on resistance?
Because emf is the very source of voltage, either chemical or inductive, an can be meassured at open circuit only so, internal resistance of the supplier is not affecting it.
How the cells of same emf can be connected to get large value of emf?
They are connected in 'series', the negative terminal of one cell connected to the positive terminal of the next cell, and so on with as many cells as you have, so that there is only one path for current through the entire combination of cells. In this configuration, the EMF of the combination is the sum of the individual EMFs, but the combination can't deliver any more current (amperes) than any single cell can.
Is potential difference always less than emf of the cell?
No. Because during charging process of a battery current flows in opposite direction to the discharging/consumption. so equation Emf=P.d. +Ir is changed to Emf=p.d. +Ir. Hence during charging process of a battery Potential difference is greater than electromotive force.
What happens to emf as a battery is used?
As a battery is used, its electromotive force (emf) decreases due to various factors such as internal resistance, chemical reactions, and depletion of the chemical components that generate the emf. This leads to a reduction in the voltage output of the battery over time as it discharges.
How many ways are there to generate an emf?
Electromotive force (emf) can be generated in several ways, primarily through electromagnetic induction, chemical reactions in batteries, and thermoelectric effects. In electromagnetic induction, emf is generated by changing magnetic fields or relative motion between a conductor and a magnetic field. Batteries produce emf through electrochemical reactions, while thermoelectric generators convert temperature differences directly into electrical energy. Each method utilizes different principles of physics and chemistry to generate electrical energy.
What are the differences between galvanic series and emf series?
1)galvanic series is for both elements and alloys whereas emf series is only for elements 2)galvanic series tells about relative tendencies of corrosion whereas emf series tells about relative tendencies of displacement
what will be the emf of the battery when Four cells each of emf E are joined in parallel to form a battery?
E. Joined in parallel, the voltage (or electromotive force, "emf") isn't additive. You'd get four times the current, or four times the life of a single battery, but it would have the same voltage.
