Draw the symbols of the following circuit components.
$(i)$. electric cell
$(ii)$. switch in off position
$(iii)$. electric bulb
$(iv)$. battery

Academic Physics NCERT Class 7

Tutorialspoint

Updated on: 10-Oct-2022

91 Views

Draw in your notebook the symbol store present the following components of electrical circuits: connecting wires, switch in the ‘OFF’ position, bulb, cell, switch in the ‘ON’ position, and battery.
Electric circuit and Electrical Symbols
Explain the importance of switch in an electric circuit.
When a switch is in OFF position,$(i)$. circuit starting from the positive terminal of the cell stops at the switch.$(ii)$. circuit is open.$(iii)$. no current flows through it.$(iv)$. current flows after some time.Choose the combination of correct answer from the following.$(a)$. all are correct$(b)$. $(ii)$. and $(iii)$. are correct$(c)$. only $(iv)$. is correct$(d)$. only $(i)$. and $(ii)$. are correct
Explain the important components and working of an electric bulb?
Zubeda made an electric circuit using a cell holder shown in Fig. 14.4, a switch, and a bulb. When she put the switch in the ‘ON’ position, the bulb did not glow. Help Zubeda in identifying the possible defects in the circuit."
Draw circuit symbols for a) fixed-resistance b) variable resistance c) a cell d) a battery of 3 cells e) an open switch f) a closed switch
Name the effect of current responsible for the glow of the bulb in an electric circuit.
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 ________.
Explain the importance of using in a household electric circuit (i) fuse, and (ii) earthing wire.
Draw the structures for the following compounds :(i) Ethanoic acid(ii) Bromopentane(iii) Butanone(iv) Hexanal
What is the function of electric switch?
In the circuit shown in Fig. 14.25$(i)$. Would any of the bulb glow when the switch is in the ‘OFF’ position?$(ii)$. What will be the order in which the bulbs A, B and C will glow when the switch is moved to the ‘ON’ position?"
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?

Kickstart Your Career

Get certified by completing the course

Get Started

Advertisements