The magnetic flux through a loop:
Group of answer choices:
A. is maximized when the B field lines in the plane of the loop
B. doesn't depend on the direction of the B field
C. depends just on the B field going through the loop
D. is proportional to the number of magnetic field lines going through it
E. is zero when the B field is perpendicular to the plane of the loop

Cells in the nervous system have a potential difference of 70 mv across the cell membrane separating the interior of the cell from the extracellular fluid. this potential difference is maintained by ion pumps that move charged ions across the membrane. is this an emf? select the correct answer and explanation. 1)no. the ion pumps cannot separate charges; thus, they cannot create a potential difference. 2)yes. the ion pumps cannot separate charges, but they still can create a potential difference. 3)yes. the ion pumps can actively separate charge; thus, they can create a potential difference. 4)no. the ion pumps can separate charges, but they cannot create a potential difference.

Match each type of lever with the correct diagram. 1. first-class 2. third-class 3. second-class

An electron moving at 5.06 103 m/s in a 1.23 t magnetic field experiences a magnetic force of 1.40 10-16 n. what angle does the velocity of the electron make with the magnetic field? there are two answers between 0° and 180°. (enter your answers from smallest to largest.)