Sihai network

This experiment is really interesting

Today, science teacher Liu asked us to light up the small light bulb. Diary 500 words

The first step is to assemble the lamp holder; The second step is to assemble the battery; Step 3: connect the circuit. First of all, I started to assemble the lamp holder. First, I bent one of the contacts, inserted it into the small hole in the push wall of "Sihai net reading" for you from the inside of the lamp hole, and then bent the other from the bottom up. Then, I connected the wire to the small hole of the contact of the lamp holder. So the first step is done. The second step is to assemble the battery box. I insert contacts into the holes at both ends of the battery clip. The upper end is bent inward and the lower end is connected with wires. The third and most important step is to connect the circuit. I connect the lamp holder of the battery clip with wires and put the battery in the battery clip. I waited and waited, and when I was impatient, I found that the wire was getting hot. I thought to myself: why does the wire get hot? This is when my father came and said: '& lsquo; Son, what are you doing& rsquo;& lsquo; I replied, I'm assembling a light bulb! Dad said: '& quot; Are you in trouble? " I said: 'yes, the wire I assembled is hot.' Dad looked around and said: 'you didn't take the copper out of the wire. Dad used a lighter to burn the wire a little. I tried again, and this time the light bulb was really on.

This experiment is really interesting.