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Activity 3 Build a Flashlight Objectives: To build a working flashlight to determine the relationship between current, voltage and resistance. Materials: scissor Procedure: (3) cm apart. one cardboard tube flashlight bulb paper cup one dry cell aluminum foil duct tape 1. Insert the dry cell inside the cardboard tube to check if the fit is right. After removing the battery from the tube, punch two holes on the side (near the middle) of the tube about three 2. Connect a 10 cm wire to each terminal of the battery using the small strips of duct tape. Touch the loose ends of the wires to a flashlight bulb to identify where to connect them. 3. Wrap an aluminum foil on a paper cup. Poke a hole in the bottom of the paper cup that is slightly smaller than the bulb. 4. Secure the base of the light bulb through the hole. 5. Pass the long wire through one of the holes in the tube. Tape it to the side of the tube, leaving 2 cm outside the tube. The other end should reach the end of the tube. Insert the battery of the tube. Be sure to pass the wire attached to the bottom of the battery through the other hole in the tube. Check if the two wires outside the tube can touch. 7. Secure the battery inside the tube using the duct tape. 8. Attach the wires from the end of the tube to the contact points on the bulb. Make sure that all connections are tight. 9. Connect the two free ends of the wires together. Did the bulb light? If it doesn't, check to make sure that all connections are taped together securely. https:f/www.energizer.com Figure 5. Sample DIY Flashlight. Questions: Write your answers on a separate sheet of paper. Q1. Describe your flashlight. What are the necessary materials needed to light a flashlight and what do they perform/do? Q2. Compare your flashlight to a commercial one. Is there any difference in their function? Explain 7​

Sagot :

Answer: Flashlights are really important we need them a lot for black outs they also give light to darkness.The materials are 1cardboard tube where it served as the body of the flashlight,flashlight bulb that protects the light from getting wet,paper cup that served as the head of the flashlight which also makes a wider range of the light,scissor to cut the extra materials,one dry cell that is the most important source of light energy,aluminum foil for a brighter refraction of light,and duct tape that holds the paper tighter

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