The wiring in a 200 foot long branch circuit measures a total resistance of 0.5 ohms. What is the resistance per 1,000 feet?

If three resistors with values 5, 10, and 15 ohms respectively are connected in parallel, the combined total resistance is _______ ohms. Select the closest answer.

Class II locations are those that are hazardous because of the presence of _______

The wiring in a 200 foot long branch circuit measures a total resistance of 0.5 ohms. What is the resistance per 1,000 feet?

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Resistors in parallel is the Same Formula as Capacitors in series:
The Recripocal of the sum of reciprocals.

How many times more is 1000 than 200?

Strat: Please translate your message into Greek so us math nuts can understand it better

Basically you add up the resistances inverted, then invert again. Will see if I can locate a better explanation, Great Formula and Handy.

Definition of Parallel Circuit | Chegg.com (http://www.chegg.com/homework-help/definitions/parallel-circuit-4)