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5
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A region around a charged particle or object within which a force would be exerted on other charged particles or objects.
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6
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current that flows in only one direction.
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7
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An electric current that reverses its direction many times a second at regular intervals, typically used in power supplies.
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8
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Of or relating to the interrelation of electric currents or fields and magnetic fields.
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10
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The difference in electric potential between two points in an electric field; the work that has to be done in transferring unit positive charge from one point to the other, measured in volts.
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12
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A region around a magnetic material or a moving electric charge within which the force of magnetism acts.
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14
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A static electrical device that transfers energy by inductive coupling between its winding circuits.
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15
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A portion of a ferromagnetic material where the magnetic moments are aligned with one another because of interactions between molecules or atoms.
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16
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Either of the two points on the earth's surface where the dipping needle of a compass stands vertical, one in the arctic, the other in the antarctic.
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1
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A device that converts any form of energy into mechanical energy, especially an internal-combustion engine or an arrangement of coils and magnets that converts electric current into mechanical power.
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2
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The rate at which energy is transferred, used, or transformed.
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3
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A nonconductor of sound, heat, or electricity.
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4
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A machine that converts mechanical energy into electrical energy.
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5
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Total resistance of all the individual resistances in a circuit.
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9
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A component of an electrical circuit that resists the flow of electrical current.
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11
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A substance or medium that conducts heat, light, sound, or especially an electric charge.
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13
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Usually expressed in volts.
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17
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Production of an electric current by changing the magnetic field enclosed by an electrical circuit.
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