Science Practice Quiz 206

Q1.Which component can be purchased from the market to facilitate the making of batteries from two or more electric cells?

A. Insulated connecting wires. B. Metal strips for terminals. C. Cell holders. D. Rubber bands for securing connections.

Q2.In an electric circuit diagram, what does the symbol shown in Table 10.1 represent?

A. An electric bulb. B. A switch. C. A battery. D. A connecting wire.

Q3.What is the common method used to represent an electric circuit?

A. A photographic image of the physical setup. B. A detailed written description of its components. C. A physical model constructed with actual parts. D. Its circuit diagram using symbols.

Q4.What is the thin wire inside an electric bulb called that glows when an electric current passes through it?

A. Resistor B. Conductor C. Filament D. Insulator

Q5.According to the provided text, what is the primary reason for an electric bulb to get fused?

A. The bulb's glass casing is broken. B. The electric current is too low. C. Its filament is broken. D. The bulb is not connected to the mains.

Q6.In an electric circuit, when is the circuit considered to be 'closed' and current flows?

A. When the switch is in the 'OFF' position. B. When the circuit from the positive terminal to the negative terminal is incomplete. C. When the switch is in the 'ON' position, completing the circuit from the positive to the negative terminal. D. When no current flows through any part of the circuit.

Q7.What happens when the switch in an electric circuit is in the 'OFF' position?

A. The circuit is complete and current flows instantly. B. The circuit is incomplete, and no current flows. C. The bulb glows brightly. D. The circuit becomes warm due to current flow.

Q8.According to the safety precautions mentioned in the text, which power source should be used for the suggested activities?

A. Electric supply from the mains. B. A generator. C. An inverter. D. Only electric cells.

Q9.What phenomenon is observed when an electric bulb is glowing?

A. It becomes cold. B. It becomes warm. C. It produces sound. D. It changes color.

Q10.What is the phenomenon called when an electric current passes through a wire, causing it to become hot?

A. Magnetic effect of electric current B. Chemical effect of electric current C. Heating effect of electric current D. Luminous effect of electric current

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Science Practice Quiz 206