Page 48 - Robo_Genius_V1.0_flipbook_C5

2. Which part of a circuit acts as the energy source?

(i) Wires (ii) Components

(iii) Power Source (iv) Switch

3. What happens in a closed circuit?

(i) Electricity cannot flow (ii) Electricity flows continuously

(iii) The battery drains faster (iv) Devices turn off

4. Which of the following is a conductor?

(i) Copper (ii) Plastic

(iii) Glass (iv) Rubber

5. What does an LDR do when exposed to light?

(i) Increases resistance (ii) Decreases resistance

(iii) Stops current flow (iv) Acts as a power source

B. State whether the following statements are true (T) or false (F).

1. A battery is used to store energy for electrical devices.

2. An open circuit allows electricity to flow continuously.

3. Insulators are materials that allow electricity to flow freely.

4. LEDs can emit light in different colours.

5. A motor converts electrical energy into sound energy.

C. Fill in the blanks.

1. A is a path that enables electricity to flow through various
components.

2. The positive side of a battery is marked with a .

3. materials do not allow electricity to flow through them easily.

4. An LED emits light when an electric passes through it.

5. A circuit has a break that stops electricity from flowing.

46 RoboGenius (V1.0)-V