A current loop is oriented in three different positions relative to a uniform magnetic field. In position 1 the plane of the loop is perpendicular to the field lines. In positionS 2 and 3 the plane of the loop is parallel to the field as shown. The torque on the loop is maximum in
?
?
A. position 1.
B. position 2.
C. position 3
D. positions 2 and 3.
E. all three positions.
Answer: D
You might also like to view...
Each atom in a sample of lithium (Z=3, atomic mass 6.941 u) has all of its electrons removed. If exactly 1.0 C was collected in this way, what is the mass of the lithium sample?
A. 0.010 ?g B. 0.024 ?g C. 0.031 ?g D. 0.072 ?g
A force of stretches a very light ideal spring from equilibrium. What is the force constant (spring constant) of the spring?
A) 41 N/m B) 22 N/m C) 34 N/m D) 46 N/m
It is possible to see the full Moon rising just before sunrise
Indicate whether the statement is true or false
When a microwave filter consisting of vertical parallel metal rods is in the absorbing position, oscillating currents are set up in the rods. At any one instant, the current in each rod has the same magnitude and direction. At that instant
a. the rods will try to move apart horizontally. b. the rods will try to move together horizontally. c. the rods will try to shift vertically upwards. d. the rods will try to shift vertically downwards. e. the rods will not be affected because the source of current is not a battery.