A bar magnet is demagnetized by inserting it inside a solenoid of length $0.2 m, 100 t u r a s$ , and carrying a current of $5.2 A$ . The coercivity of the bar magnet is:

Question

A bar magnet is demagnetized by inserting it inside a solenoid of length 0-2m- 100turas- and carrying a current of 5-2A- The coercivity of the bar magnet is-1200- A-m2600- A-m5200- A-jm285- A-m

Toppr Admin · Accepted Answer

Coercivity -H-B-x3BC-0ni-N-x2113-i-1000-2-xD7-5-2-2600A-m

A bar magnet is demagnetized by inserting it inside a solenoid of length $0.2 m, 100 t u r a s$ , and carrying a current of $5.2 A$ . The coercivity of the bar magnet is:
$1200 A / m$
$2600 A / m$
$5200 A / j m$
$285 A / m$

Coercivity $= H = \frac{B}{μ_{0}}$
$n i = \frac{N}{ℓ} i = \frac{100}{0.2} \times 5.2$
$= 2600 A / m$

A bar magnet is demagnetized by inserting it inside a solenoid of length 0.2m,100turas, and carrying a current of 5.2A. The coercivity of the bar magnet is:1200A/m2600A/m5200A/jm285A/m

Coercivity =H=Bμ0ni=Nℓi=1000.2×5.2=2600A/m

A bar magnet is demagnetized by inserting it inside a solenoid of length $0.2 m, 100 t u r a s$ , and carrying a current of $5.2 A$ . The coercivity of the bar magnet is:
$1200 A / m$
$2600 A / m$
$5200 A / j m$
$285 A / m$

Coercivity $= H = \frac{B}{μ_{0}}$
$n i = \frac{N}{ℓ} i = \frac{100}{0.2} \times 5.2$
$= 2600 A / m$