A long straight wire is carrying a current of 2.4 A in a region where the magnetic field is perpendicular to the wire. If the magnetic field is 0.52 mT, what is the magnitude of the force on 3.0 m of the wire?
A. 
B. 
C. 
D. 3.7 N
E. 7.2 N
B.
You might also like to view...
The sun makes most of its energy by the CNO cycle
Indicate whether the statement is true or false
The basic difference between the special and general theories of relativity is that
A) the first deals with electricity and the second with magnetism. B) the first deals with nonaccelerated observers and the second deals with accelerated observers. C) the first assumes that the observers are at rest and the second allows the observers to move. D) the first deals only with accelerated observers and the second deals with nonaccelerated observers. E) actually there is no important difference between them.
An ideal Polaroid will transmit 50% of nonpolarized incident light. How much light is transmitted by two ideal Polaroids oriented with their axes parallel to each other?
A) 0% B) 50% C) 100% D) between 0% and 50% E) between 50% and 100%
The power rating of a 400-? resistor is 0.25 W. What is the maximum voltage you can safely connect across its ends?
A) 10 V B) 20 V C) 30 V D) 40 V E) 50 V