The coercivity of a magnet is 5 × 10^3 A / m. The amount of current required to be passed in a solenoid of length 30 cm and the number of turns 150,…

The coercivity of a magnet is $\displaystyle 5 \times 10^3 \mathrm{~A} / \mathrm{m}$. The amount of current required to be passed in a solenoid of length $\displaystyle 30$ cm and the number of turns $\displaystyle 150$, so that the magnet gets demagnetised when inside the solenoid is $\displaystyle \_\_\_\_$ A.