The B-H curve a ferromagnet is shown in the figure- The ferromagnet is placed inside a ling solenoid with 1000 turns-cm- The current that should be passed in the solenoid to demagnetise the ferromagnet completely is-2 mA1 mA3 mANone of these

Question

Toppr Admin · Accepted Answer

N-1000turns-cmH-NIl100AM-1000-xD7-I10-x2212-2100A-105-xD7-I10-x2212-3A-II-1mA

The B-H curve for a ferromagnet is shown in the figure. The ferromagnet is placed inside a ling solenoid with $1000$ turns/cm.. The current that should be passed in the solenoid to demagnetise the ferromagnet completely is:

$2 m A$
$1 m A$
$3 m A$
None of these

$N = 1000 t u r n s / c m$

$H = \frac{N I}{l}$

$100 \frac{A}{M} = \frac{1000 \times I}{10^{- 2}}$

$100 A = 10^{5} \times I$

$10^{- 3} A = I$

$I = 1 m A$

The B-H curve for a ferromagnet is shown in the figure. The ferromagnet is placed inside a ling solenoid with 1000 turns/cm.. The current that should be passed in the solenoid to demagnetise the ferromagnet completely is:2mA1mA3mANone of these

N=1000turns/cmH=NIl100AM=1000×I10−2100A=105×I10−3A=II=1mA

The B-H curve for a ferromagnet is shown in the figure. The ferromagnet is placed inside a ling solenoid with $1000$ turns/cm.. The current that should be passed in the solenoid to demagnetise the ferromagnet completely is:

$2 m A$
$1 m A$
$3 m A$
None of these

$N = 1000 t u r n s / c m$

$H = \frac{N I}{l}$

$100 \frac{A}{M} = \frac{1000 \times I}{10^{- 2}}$

$100 A = 10^{5} \times I$

$10^{- 3} A = I$

$I = 1 m A$