Which coil will make the strongest electromagnet for a given flow of current?
a. A 10 cm coil with 100 turns
b.A 5 cm coil with 200 turns
c. A 10 cm coil with 200 turns
d. A 20 cm coil with 200 turns

Question

Which coil will make the strongest electromagnet for a given flow
of current?
a A 10 cm coil with 100 turns
b A 5 cm coil with 200 turns
c A 10 cm coil with 200 turns
d A 20 cm coil with 200 turns

Vara · Accepted Answer

Dear
Student,
Please find below the solution
to the asked query:
The ability of electromagnet depends on the strength of the magnetic field:Intensity of magnetic field due to a circular coil:B=μ02nIrHence, the strength of the magnet depends on the value of nr
Case I:n1r1=10010=10Case II:n2r2=2005=40Case III:n3r3=20010=20Case IV:n4r4=20020=10Hence, the strongest electromagnet is possible in the case of a 5 cm coil with 200 turns
Ans: Option - b
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Which coil will make the strongest electromagnet for a given flow of current? a. A 10 cm coil with 100 turns b.A 5 cm coil with 200 turns c. A 10 cm coil with 200 turns d. A 20 cm coil with 200 turns

Which coil will make the strongest electromagnet for a given flow of current?
a. A 10 cm coil with 100 turns
b.A 5 cm coil with 200 turns
c. A 10 cm coil with 200 turns
d. A 20 cm coil with 200 turns