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Name:___ Date: ___AS and Alevel Physics Core Practical:Investigation of the electromotive force, EMF (?) and internal resistance (r) of electric cells and batteries by measuring the variation of the
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How to fill out emf and internal resistance

01
To fill out emf and internal resistance, follow these steps:
02
Start by measuring the voltage across the terminals of the battery using a voltmeter.
03
Note down this voltage measurement as the electromotive force (emf) of the battery.
04
Next, connect a known resistor to the battery.
05
Measure the current passing through the circuit using an ammeter.
06
Calculate the internal resistance of the battery using Ohm's law: Internal resistance = (emf - voltage across resistor) / current.
07
Fill out the emf and internal resistance values in the appropriate fields or record them for further analysis.

Who needs emf and internal resistance?

01
Emf and internal resistance are important concepts in the field of electric circuits and are generally needed by electrical engineers, physicists, and students studying these subjects.
02
They are used to analyze and understand the behavior of batteries and other sources of emf in various electrical systems.
03
By knowing the emf and internal resistance, one can determine the voltage output of a battery and its ability to deliver current efficiently.
04
This information is crucial for designing and optimizing circuits, predicting battery performance, and troubleshooting electrical problems.

What is EMF and internal resistance worksheet Form?

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Electromotive force (emf) is the voltage developed by a source of electrical energy when no current is flowing. Internal resistance refers to the resistance within the source itself that affects its efficiency in delivering current.
Entities involved in electrical generation, distribution, or utilization that are mandated to report on their systems' performance and characteristics may be required to file information on emf and internal resistance.
To fill out emf and internal resistance, one should provide the measured values of emf and the calculated internal resistance based on standardized testing procedures, along with any supporting documentation required by the regulatory authority.
The purpose of reporting emf and internal resistance is to ensure compliance with safety and efficiency standards, monitor the performance of electrical systems, and facilitate the assessment of energy loss due to internal resistance.
The reported information must include the measured values of emf, calculated internal resistance, the conditions under which measurements were taken, and any relevant data or observations that support the figures.
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