A long solenoid (n = 1200 turns/m, radius = 2.0 cm) has a current of a 0.30 A in its winding. A long wire carrying a current of 20 A is parallel to and 1.0 cm from the axis of the solenoid. What is the magnitude of the resulting magnetic field at a point on the axis of the solenoid?
A. 0.60 mT
B. 0.85 mT
C. 52 ?T
D. 0.40 mT
E. 0.75 mT
Answer: A
You might also like to view...
Projectile Motion: A projectile is fired from the edge of a cliff as shown in the figure. The initial velocity components are 940 m/s (horizontal) and 96 m/s (vertical). The projectile reaches maximum height at point P and then falls and strikes the ground at point Q. How high is point P above point Q, assuming no air resistance?
A. 470 m B. 490 m C. 45,000 m D. 940 m E. 90,000 m
Contrast the roles of dark matter and dark energy in the fate of the cosmos
What will be an ideal response?
A system has an increase in internal energy of 60 J while 90 J was removed from the system by heat. How much work was involved during this process and was it done on the system or done on its environment?
a. 30 J on the system b. 30 J on the environment c. 150 J on the system d. 150 J on the environment
When something is restricted to having only certain numerical values, it is said to be ________________
Fill in the blank(s) with correct word