the magnetic length of a bar magnet is 20cm then find its geometric length ? About the author Samantha
Answer: Correct option is A 2×10 −5 Am M 1 =3⋅6×10 −6 Am 2 L 1 =20 cm magnetic length L’ = 100 20×90 cm. M 1 =PL ′ 3⋅6×10 −6 =P× 100×100 20×90 P=2×10 −5 Am. Reply
Answer:
Correct option is
A
2×10
−5
Am
M
1
=3⋅6×10
−6
Am
2
L
1
=20 cm
magnetic length L’ =
100
20×90
cm.
M
1
=PL
′
3⋅6×10
−6
=P×
100×100
20×90
P=2×10
−5
Am.