physics

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five resistors of 30 ohms each are connected in parallel across a 120 volt line. the combined resistance of the five resistors is ___ ohms.

The total current in the circuit is ___ amperes.

The current in each branch is ___ amperes.

How do I set these up:?

  • physics -

    1/rtotal= 1/R1+ 1/r2 + ...= 5/30
    Rt=6ohms

    current in each resistor: 120/30=4amps

    total current=120/6=20amps

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