CBSE Class 7 Science Electricity: Circuits and Their Components (Class 7 NCERT New) Quiz 1

1. What does a motor do?

A Using the electrical energy it produces light. B It provides electrical energy. C Using the electrical energy it make it's spindle rotate. D don't know

2. What is this circuit component?

A Battery B Wire C Cell D Bulb

3. Is this the positive side or the negative side?

A Positive B Negative

4. A student connects an electric cell and a lamp using two wires. One wire connects the positive terminal of the cell to the lamp, but the second wire is left unconnected. What is the most appropriate conclusion?

A The lamp will glow dimly. B The circuit is incomplete, so current cannot flow. C The cell supplies electricity only through one wire. D The lamp will glow after some time.

5. Which observation confirms that electric current is flowing through a circuit containing an incandescent lamp?

A The switch is metallic. B The lamp glows. C The battery contains two cells. D The wires are long.

6. Four students make the following statements: I. A complete path is necessary for current to flow. II. A lamp glows only when current passes through it. III. An open circuit allows current to flow. IV. A switch can break a circuit. Which statements are correct?

A I and II only B I, II and IV only C II, III and IV only D I, III and IV only

7. An incandescent lamp is connected correctly to an electric cell, yet it does not glow. According to the textbook, which is the most likely reason?

A The lamp has fused. B The wires are too thick. C The battery contains only one cell. D The switch is too close to the battery.

8. Which action changes an open circuit into a closed circuit?

A Removing the battery B Disconnecting a wire C Moving the switch to the ON position D Replacing the lamp with another lamp

9. A switch is moved from OFF to ON without changing any other part of the circuit. Which change must occur?

A The battery stores more energy. B The circuit becomes complete. C The lamp changes polarity. D The wires become conductors.

10. Which statement about the position of a switch is correct?

A It must always be connected near the lamp. B It must always be connected near the battery. C It can be placed anywhere in the circuit. D It should never be connected between two wires.