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Electrical Resistance

276 bytes removed, 08:50, 26 October 2018

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: V = Potential Difference

: I = Current

~~Calculate the solutions to the worded questions:~~

a.

~~b. A bulb has a current of 200mA passing through it and a potential difference of 12V across it. Calculate the resistance of the bulb.~~

~~c. State the resistance of a buzzer connected in series to a 6V battery with an ammeter reading of 10mA.~~

===Example Calculations===

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~~Force~~ Potential Difference = ~~40N~~5[[V]]

~~Distance moved in the direction of the force~~ Current = 0.1~~.2m~~[[A]]

:<math> W R = Fd\tfrac{V}{I}</math>

:<math> W R = 40 \~~times~~ tfrac{5}{0.1.2}</math>

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Force = 10,000N

Distance moved in the direction of the force = 15m

:<math> W R = Fd\tfrac{V}{I}</math>

<math> W = 10,000 \times 15</math>

Distance moved in the direction of the force = 0m

:<math> W R = Fd\tfrac{V}{I}</math>

<math> W = 20 \times 0</math>

19,879

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