@dizzy_physics: When you measure the voltage ⚡️ of a battery 🔋 using a voltmeter without the battery being connected to any load (meaning, the circuit is open and no current is flowing), what you're essentially measuring is the electromotive force (EMF) of the battery. EMF is the maximum potential difference between the two terminals of the battery when no current is flowing. When a load is connected and current starts flowing, the voltage across the battery terminals is lower than the EMF due to the voltage drop across the internal resistance of the battery. #physics #electrician #electronic

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Friday 15 March 2024 03:40:21 GMT