To prevent screws from falling, the mechanic can magnetize the screwdriver by rubbing it against a magnet several times in one direction. The magnetized screwdriver will then attract the steel screws, holding them in place.
Discussion Forum Latest Questions
Yes, the compass needle’s north pole points towards the Earth’s geographic north, indicating that the Earth’s magnetic south pole is near the geographic north. Thus, the Earth’s magnetic north pole is near the geographic south.
Suspend the bar magnet freely using a string. The magnet will align itself with the Earth’s magnetic field. The end pointing towards the Earth’s geographic north is the magnet’s north pole, as opposites attract.
To find the poles, bring the marked magnet close to the unmarked one. The north pole of the marked magnet will attract the south pole and repel the north pole of the unmarked magnet, revealing its poles.
Reshma can identify the magnets by bringing each bar close to the other two. If a bar repels one and attracts the other, it is a magnet. The iron bar will only be attracted.