Electric Current and Circuits | Science | Chapter 14 | Class 7th | Questions and Answers |

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Book Cover Science Class 7th 

JANDKNCERT | Science | Class 7th |

Electric Current and Circuits | Science | Chapter 14 | Class 7th | Questions and Answers |

 

    Chapter 14: Electric Current and Circuits

    EXERCISES

    A. Fill in the blanks

    1. A drawing of an electrical circuit with standard symbols is called a/an ______ (Circuit diagram/ electric diagram).

    2. Hot plates, electric toasters, and electric irons get hot when switched on because of the ______ effect of current. (Magnetic/heating).

    3. A fuse is a ______ device (safety/heating).

    4. A wire twisted in the form of a circle is called a/an ______ (coil/electromagnet).

    5. An ______ consists of a soft iron corer with an insulated wire wound around it (electromagnet/electric magnet).

    Ans.

    1. A drawing of an electrical circuit with standard symbols is called a/an, circuit diagram (Circuit diagram/ electric diagram).

    2. Hot plates, electric toasters, and electric irons get hot when switched on because of the heating effect of current. (Magnetic/heating).

    3. A fuse is a safety device (safety/heating).

    4. A wire twisted in the form of a circle is called a/an, coil(coil/electromagnet).

    5. An electromagnet consists of a soft iron corer with an insulated wire wound around it (electromagnet/electric magnet).

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