. Practical physics. t is, tends to oppose the stopping of the means merely that a current in a coil acts as though it had 308 INDUCED CURRENTS inertia, and opposes any attempt to start or stop it. This inertia-like effect of a coil upon itself is called self-induction. Let a few dry cells be inserted into a circuit containing a coil of alarge number of turns of wire, the circuit being closed at some point bytouching two bare co2:)per wires together. Holding the bare wire in thefingers, break the circuit between the hands and observe the shock dueto the current which the F. o
. Practical physics. t is, tends to oppose the stopping of the means merely that a current in a coil acts as though it had 308 INDUCED CURRENTS inertia, and opposes any attempt to start or stop it. This inertia-like effect of a coil upon itself is called self-induction. Let a few dry cells be inserted into a circuit containing a coil of alarge number of turns of wire, the circuit being closed at some point bytouching two bare co2:)per wires together. Holding the bare wire in thefingers, break the circuit between the hands and observe the shock dueto the current which the F. of self-induction sends through yourbody. Without the coil in circuit you will obtain no such shock,though the current stopped when you break the circuit will be manytimes larger. 366. The induction coil. The induction coil, as usuallymade (Fig. 323), consists of a soft iron core C composed ofa bundle of soft iron wires ; a primary coil j^ wrapped around this core and consisting of, say,200 turns of coarse copper wire.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectphysics, bookyear1922
