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1, Fill in the blanks : 2 marks, (a) A device that is used to break an electric circuit is called, , (b) An electric cell has_________ terminals., , 2. Mark ‘True’ or ‘False’ for following statements: 3 marks, (a) Electric current can flow through metals., (b) Instead of metal wires, a jute string can be used to make a circuit., , (c) Electric current can pass through a sheet of thermo Col., , 3. Explain why the bulb would not glow in the arrangement shown in Fig. 12.13. 2 marks, , 6, }, , Se ed, , Fig. 12.13, , , , 4. What is the purpose of using an electric switch? Name some electrical gadgets that have switches, built into them. 3 marks, , 5. Why should an electrician use rubber gloves while repairing an electric switch at your home, Explain. 2 marks, , 6. In an electric bulb, light is produced due to the glowing of 2 marks, (a) the glass case of the bulb, , (b) the thin filament, , (c) the thick wires supporting the filament, , (d) gases inside glass case of the bulb., , 7. . Paheli is running short of connecting wires. To complete an electric circuit, she may use a, , (a) glass bangle, , (b) thick thread 2 marks, (c) rubber pipe, , (d) steel spoon, , 8. Why do bulbs have two terminals? 2 marks, , 9. A fused bulb does not glow. Why? 2 marks