2. Schuljahr - Activity Book mit Audio-CD, Minibildkarten und Faltbox

2. Schuljahr - Activity Book mit Audio-CD, Minibildkarten und Faltbox

» » Fisika FIGURE 1 below shows a circular loop L1 of radius 7 cm carries a 12 A current and another one loop L2 of radius 1.6 cm, having 30 turns and carrying a 3A current is placed at the centre of loop L1. What will be the resultant magnetic field at point P if the two current flow in the opposite direction?

Fisika FIGURE 1 below shows a circular loop L1 of radius 7 cm carries a 12 A current and another one loop L2 of radius 1.6 cm, having 30 turns and carrying a 3A current is placed at the centre of loop L1. What will be the resultant magnetic field at point P if the two current flow in the opposite direction?

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FIGURE 1 below shows a circular loop L1 of radius 7 cm carries a 12 A current and another one loop L2 of radius 1.6 cm, having 30 turns and carrying a 3A current is placed at the centre of loop L1. What will be the resultant magnetic field at point P if the two current flow in the opposite direction?

A circular loop L₁ with a radius of 7 cm carries a current of 12 A and another circular loop L₂ with a radius of 1.6 cm, has 30 turns and a current of 3A is placed at the center of the circle L₁. The resultant magnetic field at point P if two currents flow in opposite directions is equal to [tex]2,305\pi \times 10^{-3}~T[/tex] or [tex]7,24 \times 10^{-3}~T[/tex] with the resultant inward.

Penjelasan dengan langkah-langkah:

Diketahui:

  • Kawat melingkar L₁ dengan radius r₁ = 7 cm dialiri arus listrik 12 A.
  • Kawat melingkar L₂ dengan N = 30 lilitan dan radius r₂ = 1,6 cm dialiri arus listrik 3 A.
  • Kedua kawat sepusat pada titik P.

Ditanya:

Berapakah resultan medan magnet di titik P jika kedua arus mengalir dalam arah yang berlawanan?

Proses:

Rumus induksi medan magnet kawat melingkar di pusat lingkaran adalah sebagai berikut.

[tex]\boxed{B=\frac{\mu_0 I N}{2a} }[/tex]

Keterangan:

  • B = medan magnet (T atau Wb/m²)
  • I = kuat arus (A)
  • N = banyak lilitan
  • a = radius (m)
  • [tex]\mu_0 = 4\pi \times 10^{-7}[/tex]

Aturan tangan kanan pada kawat melingkar berarus.

  • Arah B = arah ibu jari
  • Arah I = arah putaran keempat jari tangan

Step-1: hitung medan magnet L₁

[tex]\boxed{B_1=\frac{(4\pi \times 10^{-7})(12)(1)}{2(7\times 10^{-2})} }[/tex]

[tex]B_1=3,43\pi \times 10^{-3}~T[/tex] dengan vektor B₁ berarah ke dalam.

Step-2: hitung medan magnet L₂

[tex]\boxed{B_2=\frac{(4\pi \times 10^{-7})(3)(30)}{2(1,6\times 10^{-2})} }[/tex]

[tex]B_2=1,125\pi \times 10^{-3}~T[/tex] dengan vektor B₂ berarah ke luar

Step-3: hitung resultan medan magnet di titik P

Misalnya acuan arah positif adalah ke dalam, maka [tex]\Sigma B = B_1 - B_2.[/tex]

[tex]\Sigma B = 3,43\pi \times 10^{-3}- 1,125\pi \times 10^{-3}[/tex]

[tex]\therefore \Sigma B = 2,305\pi \times 10^{-3}~T[/tex] atau [tex]\Sigma B = 7,24 \times 10^{-3}~T.[/tex]

Karena hasilnya positif, maka resultan medan magnetik berarah ke dalam.

Pelajari lebih lanjut

Pelajari materi tentang tentang cara memperbesar induksi magnetik pada solenoid melalui pranala https://brainly.co.id/tugas/8774859

#BelajarBersamaBrainly

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