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8 Cards in this Set
- Front
- Back
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Resistance in a Series Circuit
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THE TOTAL CIRCUIT RESISTANCE (RT) IS EQUAL TO THE SUM OF THE INDIVIDUAL
RESISTANCES. RT = R1 + R2 + R3+ . . . R n |
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OHM'S LAW
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The current in a circuit is DIRECTLY proportional to the applied voltage and INVERSELY proportional to the circuit resistance.
I=E/R I=current (amperes) E=voltage (volts) R=resistance (ohms) as the resistance in a circuit increases, the current decreases proportionately. |
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Voltage, Current, Resistance Formula
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E = I x R
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basic power formula
power=watts |
P = E x I
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Wirewound resistors
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When resistors with wattage ratings greater than 5 watts are needed, wirewound resistors are used.
Wirewound resistors are made in values between 5 and 200 watts. Special types of wirewound resistors are used for power in excess of 200 watts. |
