Monday, September 13, 2010

Blog 4. Prelab: Using Voltmeter and Ammeter

Name

Symbol

Unit

Definition

Voltage

V

Volt

Potential energy per Coulomb of charge between two points.

V = E/Q

Current

I

Ampere (A)

The rate of charge flow

I = Q/t

Resistance

R

Ohm (Ω)

The measure of difficulty of the flow in an electrical current.

R = V/I

Power

P

Watt (W)

The rate of energy passed on to different loads within a circuit.

P = I · V

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