Define velocity,speed,work, electric current and electric circuit...
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Most electrical signals carried by currents travel at speeds on the order of 108m/s, a significant fraction of the speed of light. Interestingly, the individual charges that make up the current move much more slowly on average, typically drifting at speeds on the order of 10−4m/s
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VELOCITY - The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of time. ... Velocity is a physical vector quantity; both magnitude and direction are needed to define it.
SPEED WORK - Speed work is a popular type of running workout, but many runners avoid it. ... Speed work refers to a type of running workout in which you are running for certain intervals near, at, or even faster than your VO2max pace.
ELECTRIC CURRENT - Electric current, any movement of electric charge carriers, such as subatomic charged particles (e.g., electrons having negative charge, protons having positive charge), ions (atoms that have lost or gained one or more electrons), or holes (electron deficiencies that may be thought of as positive particles).
ELECTRIC CIRCUIT - Electric circuit, path for transmitting electric current. An electric circuit includes a device that gives energy to the charged particles constituting the current, such as a battery or a generator; devices that use current, such as lamps, electric motors, or computers; and the connecting wires or transmission lines.
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