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Internal Resistance and emf

Internal Resistance and emf. Internal Resistance. r. emf. The emf of the battery is the open circuit potential across the terminals. There is no current flowing through the battery, so this is the maximum or ideal potential. emf = ε. Terminal Voltage.

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Internal Resistance and emf

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  1. Internal Resistance and emf

  2. Internal Resistance r

  3. emf The emf of the battery is the open circuit potential across the terminals. There is no current flowing through the battery, so this is the maximum or ideal potential. emf = ε

  4. Terminal Voltage As soon as current flows, the terminal voltage drops.

  5. Example What is the terminal voltage of the battery when the resistor is connected to it?

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