Fill in the blanks :
$(a)$. A device that is used to break an electric circuit is called ___________.
$(b)$. An electric cell has _______________ terminals.

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Updated on 10-Oct-2022 13:26:54

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• Fill in the blanks 1. A device that is used to break an electric circuit is called __________2. An electric cell has _______ terminals
• Fill in the blanks :$(a)$. A device that is used to break an electric circuit is called _______________.$(b)$. An electric cell has _______________
• Fill in the blanks:$(i)$. Our body is a ________ of electricity.$(ii)$. An electric cell produces electricity from the ________ in it.$(iii)$. In an electric circuit a fuse is a ________ to prevent possible fire.$(iv)$. A combination of two or more cells is called a ________.
• What is an electric circuit?
• What is an ON - OFF device used to make or break the circuit ?
• What is an electric cell?
• The device used for producing electric current is called a$(a)$. generator.$(b)$. galvanometer.$(c)$. ammeter.$(d)$. motor.
• Fill in the blanks:1. Our body is a ………………….. of electricity. 2. An electric cell produces electricity from the ………………….. in it. 3. In an electric circuit a fuse is a ………………….. to prevent possible fire. 4. A combination of two or more cells is called a ………………….. . 5. The coil of wire in an electric heater is called an ………………….. . 6. A ………………….. is a safety device which prevents damages to electrical circuits and possible fires. 7. The wire gets ………………….. when an electric current passes through it. 8. We must look for ………………….. mark on electrical appliances. 9. When electric current passes through a wire, it behaves like a magnet. It is the ………………….. effect of current. 10. Crane has a strong ………………….. attached to it.
• Give the symbol of an electric fuse used in circuit diagrams.
• Which component is used to regulate current without changing the voltage source in an electric circuit?
• What is the main difference in the wiring of an electric bulb and a socket for using an electric iron in a domestic electric circuit? What is the reason for this difference?
• Name an instrument that measures electric current in a circuit.Define the unit of electric current.What do the following symbols mean in circuit diagrams?An electric circuit consisting of a 0.5 m long nichrome wire XY\n
• a) What is an electric current? What makes an electric current flow in a wire?b) Define the unit of electric current(or Define Ampere).
• Choose the incorrect statement.$(a)$. A switch is the source of electric current in a circuit.$(b)$. A switch helps to complete or break the circuit.$(c)$. A switch helps us to use electricity as per our requirement.$(d)$. When the switch is open there is an air gap between its terminals.
• What is the usual capacity of an electric fuse used (i) in the lighting circuit, and (ii) in the power circuit, of a small house?