Physics - Applied Electricity (Current & Magnetic Fields)

Gap-Filling Quiz

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   circuit      coil      electromagnetic      force      galvanometer      series      shunt      starter      switch      variable      voltmeter   
An relay is a device that enables a small current in one circuit to switch on or off a large current in an adjoining . It is used as a in electric circuits. They are used in cars in the motor and the heated rear window.
The simple dc motor, the moving galvanometer and the moving coil loudspeaker are all based on a current-carrying conductor in a magnetic field experiencing a .
A is converted to an ammeter by connecting a small resistance, called a in parallel with it.
A galvanometer is converted to a by connecting a large resistance, called a multiplier in with it.
A galvanometer may also be converted to an ohmmeter by connecting a battery and a resistance in series with it.