Electrical to Light Energy Practice Exercise 1

 An incandescent light bulb is turned on in a room. Describe the energy transformation that takes place inside the bulb that allows it to produce light. (2 marks)

 In a simple circuit with a battery, switch, and bulb, what happens to the bulb when the switch is closed? (1 mark)

Name three devices used at home that transform electrical energy into light energy. (3 marks)

Name three devices used at home that transform electrical energy into light energy. (3 marks)

Name three devices used at home that transform electrical energy into light energy. (3 marks)

Name three devices used at home that transform electrical energy into light energy. (3 marks)

A person turns on a battery-powered flashlight. Describe the complete chain of energy transformation from the battery to the light that is produced. (2 marks)

Explain how electrical energy is transformed into light energy in an LED lamp. (1 mark)

A parent wants to buy new light bulbs for a desk lamp. They have two options: an LED bulb and an old incandescent bulb. They choose the LED bulb because it uses less electricity and does not get very hot. Explain how the energy transformation in an LED bulb makes it a more efficient choice for producing light. (2 marks)

Study the diagram below showing a cell connected to a bulb through wires and a switch.a) Name the type of energy produced by the bulb. (1 mark)b) State the type of energy the bulb changes from.(1 mark)

Study the diagram below showing a cell connected to a bulb through wires and a switch.a) Name the type of energy produced by the bulb. (1 mark)b) State the type of energy the bulb changes from.(1 mark)

Maria has a simple circuit made with a battery, a switch, and a small bulb. Explain the energy transformation that occurs from the moment she turns the switch on until the bulb lights up. (2 marks)

Marion has a simple circuit made with a battery, a switch, and a small bulb. Explain the energy transformation that occurs from the moment she turns the switch on until the bulb lights up. (2 marks)

The diagram shows a decorative light system for a school event. Four small bulbs are connected in series to a battery and a switch. When the switch is closed, only the first bulb lights up and the others remain off.a) Identify one possible fault in the circuit. (1 mark)b) Explain how fixing this fault would restore light to all the bulbs. (1 mark)

The diagram shows a decorative light system for a school event. Four small bulbs are connected in series to a battery and a switch. When the switch is closed, only the first bulb lights up and the others remain off.a) Identify one possible fault in the circuit. (1 mark)b) Explain how fixing this fault would restore light to all the bulbs. (1 mark)

The diagram below shows a decorative light system for a school event. Four small bulbs are connected in series to a battery and a switch. When the switch is closed, only the first bulb lights up and the others remain off.a) Identify one possible fault in the circuit. (1 mark)b) Explain how fixing this fault would restore light to all the bulbs. (1 mark)

When Brian switches on the light in his study room, the bulb glows brightly. Which energy transformation has taken place? (1 mark)