Physics 16&21 Electromagnetism

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Presentation transcript:

Physics 16&21 Electromagnetism Electromotive Force, Energy & Power MARLON FLORES SACEDON

Electromotive force Electromotive force (emf) or (𝜀)

Electromotive force Electromotive force (emf) or (𝜀)

Electromotive force Electromotive force (emf) or (𝜀)

Electromotive force Figure shows a source (a battery) with emf 𝜀=12𝑉 and internal resistance 𝑟=2Ω . (For comparison, the internal resistance of a commercial 12V lead storage battery is only a few thousandths of an ohm.) The wires to the left of a and to the right of the ammeter A are not connected to anything. Determine the respective readings 𝑉𝑎𝑏 and I of the idealized voltmeter 𝑉 and the idealized ammeter 𝐴.

Electromotive force Figure shows a source (a battery) with emf 𝜀=12𝑉 and internal resistance 𝑟=2Ω . (For comparison, the internal resistance of a commercial 12V lead storage battery is only a few thousandths of an ohm.) The wires to the left of a and to the right of the ammeter A are not connected to anything. Determine the respective readings 𝑉𝑎𝑏 and I of the idealized voltmeter 𝑉 and the idealized ammeter 𝐴. By adding 4Ω resistor?

energy anD power in eLeCtriC CirCuits

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Answers to odd numbers

eNd