2 (a) Figure 1 shows the magnetic field produced by a current in a long, straight wire - Edexcel - GCSE Physics Combined Science - Question 2 - 2018 - Paper 1
Question 2
2 (a) Figure 1 shows the magnetic field produced by a current in a long, straight wire.
Which row of the table is correct when the strength of the magnetic field is... show full transcript
Worked Solution & Example Answer:2 (a) Figure 1 shows the magnetic field produced by a current in a long, straight wire - Edexcel - GCSE Physics Combined Science - Question 2 - 2018 - Paper 1
Step 1
Which row of the table is correct when the strength of the magnetic field is greatest?
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The correct answer is B: small distance from the wire and large current. This is because the strength of the magnetic field is directly proportional to the current and inversely proportional to the distance from the wire.
Step 2
Which of these materials would be the most suitable for making a temporary magnet?
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The most suitable material for making a temporary magnet is B: iron. Iron is ferromagnetic, making it more responsive to magnetic fields compared to the other options listed.
