PHYS 102 Chapter Notes - Chapter 26: Electromagnet, Gie, Ammeter

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blackgiraffe178

22 Feb 2017

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Components of a circuit are interconnected in a network. Direct current circuits are circuits in which the direction of the current does not change with time such as flashlights. Alternating current circuits are circuits in which the current oscillates back and forth. When several circuit elements such as resistors, batteries, and motors are connected in sequence, with only a single current path between the points, it is said that they are connected in series. Because of conservation charge, capacitors in series all have the same charge if they are initially uncharged. If resistors are in parallel, then each resistor provides an alternative path between points. For circuit elements connected in parallel, the potential difference is the same across each element. Vab = ireq: vab is the potential difference between terminals a and b. I is the current: req is equivalent resistance. Cu(cid:396)(cid:396)e(cid:374)t is (cid:374)ot (cid:862)used up(cid:863) as it flo(cid:449)s th(cid:396)ough the (cid:272)i(cid:396)(cid:272)uit.

Related Questions

find the amplitude of the current i0 through the voltage source.

To understand the use of phasors in analyzing a parallel AC circuit.Phasor diagrams, or simply phasors, provide a convenient graphical way of representing the quantities that change with time along with .This makes them useful for analyzing AC circuits with their inherent phase shifts between voltage and current. If a quantity I(t) changes with time as , a phasor is a vector whose length represents the amplitude Io(see the diagram). This vector is assumed to rotate counterclockwise with angular speed ; that way, the horizontal component of the vector represents the actual value I(t) at any given moment.In this problem, you will use the phasor approach to analyze an AC circuit.