Physics, asked by zaffarsyed820, 10 months ago

A closely wound solenoid of 2000 turns and area of cross-section 1.6 x 10⁻⁴ m², carrying a current of 4.0 A, is suspended through its centre allowing it to turn in a horizontal plane.What is the magnetic moment associated with the solenoid?

Answers

Answered by Blaezii
43

Answer :

M = 1.28 Am².

Explanation :

(Part A)

Given that :

A closely wound solenoid of 2000 turns.

The area of cross-section 1.6 x 10⁻⁴ m².

Carrying a current of 4.0 A.

To Find :

The magnetic moment associated with the solenoid.

Solution :

We have,

Number of turns , N = 2000

Current , I = 4 A

Cross section area  A = 1.6 × 10⁻⁴ m².

We know that :

\bigstar\;\boxed{\sf Magnetic\;Moment=NIA}

Put the given values :

\sf \\\implies 2000 \times 4\times 1.6\times 10^{-4}\\ \\\implies \;1.28\;AM^2

Answer  = M = 1.28 Am².

\bigstar\;\textbf{\underline{\underline{Remember -}}}}

The direction of \vec{M} is along the axis of the solenoid in the direction related to sense of current through "The Right handed screw rule"

Answered by Anonymous
38

》 A closely wound solenoid of 2000 turns and area of cross-section 1.6 x 10⁻⁴ m² carrying a current of 4.0 A, is suspended through its centre allowing it to turn in a horizontal plane.

Here..

• Number of turns (N) = 2000

• Area of cross-section (A) = 1.6 × 10-⁴ m²

• Current (I) = 4 A

We have to find theMmagnetic moment (M).

We know that..

\boxed{\bold{M\: =\: NIA}}

Put the known values in above formula to find Magnetic moment.

=> M = 2000 × 1.6 × 10-⁴ × 4

=> M = 3200 × 10-⁴ × 4

=> M = 12800 × 10-⁴

=> M = 1.28

Units :-

M = NIA

  • Unit of N = no units
  • Unit of I = A (ampere)
  • Unit of A = m² (meter square)

So,

=> M = A-m²

Magnetic moment associated with the solenoid is 1.28 A-m².

_____________________________

☆ Some Basic of Magnetism :

  • The earth beahves as a bar magnet.

  • When a magnet is suspended freely, it comes to rest along north-south direction.

  • Like poles repel each other and unlike poles attract each other.
Similar questions