A straight 1.0-m long wire is carrying a current. The wire is placed perpendicular to a magnetic field of strength 0.20 T. If the wire experiences a force of 0.60 N, what is the current in the wire?
A) 1.0 A B) 5.0 A C) 2.0 A D) 3.0 A E) 4.0 A
D
You might also like to view...
By approximately _________ years ago, _________ had produced oxygen in enough amounts to be a significant fraction in Earth's atmosphere.
a. 100 million; trees and plants b. 1 billion; trees and plants c. 250 million; bacteria and algae d. 2.5 billion; bacteria and algae e. 2,000; animals and humans
A loop of wire in a generator produces alternating current by:
a. rotating in a constant electric field. b. rotating through areas of high and low electrical force. c. creating current by rotating in an existing magnetic field. d. creating a varying magnetic field with its rotational kinetic energy. e. being wound around a metal core to produce an electromagnet.
At what distance from a point charge of 8.0 ?C would the electrical potential be 4.8 × 10^4 V? (ke = 8.99 × 10^9 N?m2/C2)
a. 1.8 m b. 0.43 m c. 1.5 m d. 5.4 m e. 0.60 m
Consider the two inductors shown below (which are in independent circuits). The induced emf in each inductor is such that the inductor behaves like a battery with its positive end to the right. 
Which inductor carries the larger current?
A. Inductor 1 B. Inductor 2 C. The current or change in current is the same in both. D. One needs more information to answer the question.