Kamu mungkin pernah menggunakan alat alat di bawah ini

Tahukah kamu bagaimana alat alat tersebut bekerja? Coba Jelaskan !

Kawat lurus berarus listrik, saat berada dalam medan magnet akan mendapat gaya magnet. Untuk arah gaya, perhatikan gambar di bawah

Arah gaya magnet mengikuti kaidah tangan kanan

Sumber gambar : www.studiobelajar.com

jempol = arah arus listrik

telunjuk = arah medan magnet

telapak tangan = arah gaya magnet

Besar gaya magnet pada kawat sebesar:

F = gaya magnet ( N)

i = kuat arus listrik (A)

l = panjang kawat

B = Kuat medan magnet ( Tesla)

SOAL

Three particles move through a constant magnetic field and follow the paths shown in the drawing. Determine whether each particle is positively () charged, negatively () charged, or neutral

Figure shows a very long, straight wire carrying a current of 3.0 A. A particle has a charge of 6,5 10^6 C and is moving parallel to the wire at a distance of 0.050 m. The speed of the particle is 280 m/s. Determine the magnitude and direction of the magnetic force exerted on the charged particle by the current in the wire.

A wire carries a current of 0.66 A. This wire makes an angle of 53 with respect to a magnetic field of magnitude 4.7 10^5 T. The wire experiences a magnetic force of magnitude 7 10^5 N. What is the length of the wire?

The drawing shows a thin, uniform rod that has a length of 0.45 m and a mass of 0.094 kg. This rod lies in the plane of the paper and is attached to the floor by a hinge at point P. A uniform magnetic field of 0.36 T is directed perpendicularly into the plane of the paper. There is a current I 4.1 A in the rod, which does not rotate clockwise or counterclockwise. Find the angle .

(Hint: The magnetic force may be taken to act at the center of gravity.)

MOTOR LISTRIK