help me with this lab test typewritten A single strand of wire produces only a very weak
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help me with this lab test typewritten
A single strand of wire produces only a very weak magnetic field, but a tight coil of wire (called a solenoid) gives off a stronger field. In this experiment you will use an electric current running through a solenoid to suck a needle into a straw! Materials: a Drinking straw o 6 feet insulated copper wire. 0 6- volt battery 0 Needle Procedures: 1. Make your solenoid. Take ve feet of insulated copper wire and wrap it tightly around the straw. Your solenoid should be about 3 inches long. so you'll have enough wire to wrap a couple layers. 2. Trim the ends of the straw so they just stick out of the solenoid. 3. Hold the solenoid horizontally and put the end of the needle in the straw and let go. What happens? 4. Now strip an inch of insulation off each end of the wire and connect the ends to the 6-volt battery. Insert the needle part-way in the straw again and let go. This time what happens? (Don't leave the wire hooked up to the battery for more than a few seconds at a time - it will get hot and drain the battery very quickly). 5. Try some more experiments with your solenoid - will more coils make it suck the needle in faster? Will it still work with just a few coils? Make a prediction and then try it out! 6. Write your observations on your paper
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