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Saturday, February 13, 2010

POTENTIAL DIFFERENCE
-Electric current can only flow when there is a potential difference (V) or (p.d.) to push the charges around a circuit.
-Charges will always flow from higher to lower potential.
-The potential difference across any two points is the amount of energy needed to move one unit charge of electricity from one point to another.
-S.I. unit is Volt (V)
Measuring potential difference
-Voltmeter is used to measure potential difference.
-Voltmeter must be connected parallel to the component.

I AM GRUMPY.
11:00 AM


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      Name: Abigail (:
      School: PLMGSS
      Class: 1-2b '09 , 2-2 '10

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