Possible answers: 3, 1+3, 2, 1, 1+2 2. A metal bar is descending with velocity t
ID: 3899203 • Letter: P
Question
Possible answers: 3, 1+3, 2, 1, 1+2
2. A metal bar is descending with velocity through a uniform magnetic field that is directed into the page. Which of the figures below best describes the charge distribution on the bar:
ANSWER CHOICES: 4, 2root2, root 2, 2, 1
4. A uniform steady magnetic field is directed into the page. A small positive charged particle, moving in the plane of the page, follows an anticlockwise spiral of increasing radius. A reasonable explanation for this behavior is that:
a. the charge is positive and is losing positive charge
b.the charge is negative and is losing negative charge
c.this cannot be determined without knowing the speed of the particle
d.the charge is positive and is acquiring more positive charge
e.the charge is negative and is gaining negative charge
Explanation / Answer
1, 3
2. option E
3. sqrt 2
4.
a. the charge is positive and is losing positive charge