concepts_ch5

Remember into that the magnetic force must be

This preview shows page 1. Sign up to view the full content.

This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: etic force is directed into the page. Remember into that the magnetic force must be perpendicular to BOTH the B field perpendicular BOTH and the velocity. and →→→→→ v →→→→→ →→→→→ F× q →→→→→ ConcepTest 5.1d Magnetic Force IV ConcepTest Magnetic a) out of the page A positive charge enters a positive uniform magnetic field as shown. What is the direction of the magnetic force? of b) into the page c) zero d) to the right e) to the left ↑↑↑↑↑↑↑ v ↑ ↑ ↑ ↑ ↑ ↑ ↑ ↑ ↑ ↑↑ q ↑↑ ↑ ↑ ↑ ↑ ↑↑↑↑↑↑↑ ↑ ConcepTest 5.1d Magnetic Force IV ConcepTest Magnetic A positive charge enters a positive uniform magnetic field as shown. What is the direction of the magnetic force? of a) out of the page b) into the page c) zero d) to the right e) to the left The charge is moving parallel to the magnetic field, so it does not the experience any magnetic force. experience Remember that the magnetic force is given by: F = v B sin(θ ) . ↑↑↑↑↑↑↑ v ↑ ↑↑↑↑↑↑↑ q ↑↑↑↑↑↑↑ ↑ F=0 ↑ ↑↑↑↑↑↑↑ ↑ ConcepTest 5.2 Atomic Beams Atomic A beam of atoms enters beam a magnetic field region. What path will the atoms follow? atoms x x x x x x x x x 1x x x xxxxxxxxxxxx xxxxxxxxxxxx 2 xxxxxxxxxxxx xxxxxxxxxxxx 4 xxxxxxxxxxxx 3 ConcepTest 5.2 Atomic Beams Atomic A beam of atoms enters beam a magnetic field region. What path will the atoms follow? atoms x x x x x x x x x 1x x x xxxxxxxxxxxx xxxxxxxxxxxx 2 xxxxxxxxxxxx xxxxxxxxxxxx 4 3 xxxxxxxxxxxx Atoms are neutral objects whose net charge is zero. neutral zero Thus they do not experience a magnetic force. Follow-up: What charge would follow path #3? What about path #1? ConcepTest 5.3 Magnetic Field Magnetic A proton beam enters into a proton magnetic field region as shown below. What is the direction of the magnetic field B? a) + y b) – y b) c) + x d) + z (out of page) d) e) – z (into page) e) y x ConcepTest 5.3 Magnetic Field Conce...
View Full Document

This note was uploaded on 02/06/2014 for the course PHYS 101 taught by Professor Young during the Spring '11 term at Nicholls State.

Ask a homework question - tutors are online