Electrical Definitions
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Charge

• is conserved, measured in coulombs (1 amp per second).

• Charge of an electron = -1.6 x 10-19 C
• No. of electrons that carry 1 C = 6.25 x 1018
• Charge = the area under an I-T graph.
• 1 coulomb is the quantity of charge that passes a point in a second when the current flowing through is 1amp.

Current

• is the rate of flow of charge. Measured in Amps.

• I = Q / T
• I = current Q = charge T = time

Power

• is the rate of energy transfer. Measured in Watts (W).

• P = V x I
• P = power V = voltage I = current

Parallel

• In parallel, the voltage across each branch is the same because the branches are connected to the same two points.

Series

• The current is the same through all the components.

Other Notes in this Category

1. Electrical Definitions
2. How a Mass Spectrometer Works
3. States of Matter

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