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Symbols of Electric Components

The device us...

Question

The device used to close or open an electric is a
(a) switch
(b) resistance
(c) fuse
(d) ammeter

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Solution

(a) switch
A switch is used to open or close an electrical circuit.

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Q. What is a circuit diagram? Draw the labelled diagram of an electric circuit comprising of a cell, a resistance, an ammeter, a voltmeter and a closed switch (or closed plug key). Which of the two has a large resistance : an ammeter or a voltmeter?

State whether true or false.

A switch is used to close or open an electric circuit.

The device used for producing electric current is called a

(a) generator

(b) galvanometer

(c) ammeter

(d) motor

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