In an experiment, a student placed a sheet of paper on a bar magnet, and iron filings were sprinkled on the sheet of paper. Thereafter, the paper was gently tapped. The diagram below shows the final result of the experiment
Question 1
experiment
a Give the aim of the experiment. (2 marks)
o What conclusion could be drawn from the result
of such an experiment? (2 marks)
c. What could have happened if the iron filings had been replaced with grit? (2 marks)

a. Aim of the experiment: To identify the magnetic fields around the bar magnet.

b. After tapping the paper, the iron filings align themselves according to the lines of the magnetic force of bar magnet. The magnetic field is more concentrated at the ends of poles as most of the iron fillings are attracted at the poles and the pattern form by iron filling shows the magnetic field of the bar magnet.

c. If iron filings will be replaced with grit, there will be no magnetic movement around bar magnet as grit is not a metal and do not have any magnetic properties.

answer: a ball

explanation: because it will bounce

r = ρ x length / area  

ρ = r x area / length  

ρ is in ohm-meters  

in basic units, it is m³kg/s³a²  

i think this is it.