2.3 D.C Circuits

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currents and potential differences in series and parallel circuits two electric circuit laws.

9 Terms

1

Current in a series circuit

In a series circuit, the electric current is the same at every point in the circuit.

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2

voltage law in a series circuit

the sum of potential difference across thew components in a series circuit is equal to the potential difference in the cell.

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3

why is P.d conserved in series.

because of the conservation of energy and pd = w/Q

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4

Potentail difference in a parallel circuit

The Pd across components connected in parallel are equal.

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5

Current law (parallel)

the current from a source is equal to the sum of currents in the separate branches of a parallel circuit.

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6

why is current conserved in parallel

because of the conservation law of charge.

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7

resistors in series

R1 + R2 … =R total

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8

resistors in parallel

1/R1 + 1/R2 … = 1/Rtotal

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9

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