25_Chapter 19 HomeworkCH19 Magnetism

25_Chapter 19 HomeworkCH19 Magnetism - Magnetism 19.57 165...

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

View Full Document Right Arrow Icon
Magnetism 165 19.57 (a) Since the magnetic field is directed from N to S (that is, from left to right within the artery), positive ions with velocity in the direction of the blood flow experience a magnetic deflection toward electrode A . Negative ions will experience a force deflecting them toward electrode B . This separation of charges creates an electric field directed from A toward B . At equilibrium, the electric force caused by this field must balance the magnetic force, so ( ) qvB qE q V d ==∆ or () 6 3 160 10 V 1.33 m s 0.040 0 T 3.00 10 m V v Bd ∆× == = × (b) The magnetic field is directed from N to S. If the charge carriers are negative moving in the direction of v G , the magnetic force is directed toward point B. Negative charges build up at point B , making the potential at A higher than that at B . If the charge carriers are positive moving in the direction of
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.
Ask a homework question - tutors are online