Question

A stream of electrons is projected horizontally to the right. A straight conductor carrying a current is supported parallel to the electron steam above it. If the current in the conductor is from left to right, what will be the effect on the electron stream?
A.The electron stream will be pulled upward
B.The correct stream will be pulled downward
C.The electron stream will be retarded
D.The electron stream will be speeded up toward the right

Answer 1

A stream of charged particles, such as electrons or ions, travelling through an electrical conductor or space is known as an electric current. It's the net rate of electric charge flow through a surface or into a control container that's monitored. Charge carriers are the moving particles, and depending on the conductor, they might be one of numerous sorts of particles. Electrons flowing through a wire are commonly used as charge carriers in electric circuits. They can be electrons or holes in semiconductors. Ions carry charge in an electrolyte, while ions and electrons carry charge in plasma, an ionised gas.

Complete answer:
Charge carriers are the moving charged particles that make up an electric current in a conductive substance. The positively charged atomic nuclei of the atoms are kept in a fixed location in metals, which make up the wires and other conductors in most electrical circuits, while the negatively charged electrons are the charge carriers, free to move around in the metal. The charge carriers in other materials, particularly semiconductors, can be positive or negative depending on the dopant used. Positive and negative charge carriers may even coexist in an electrolyte in an electrochemical cell, as in an electrolyte.
An equivalent flow of negative charges in the opposite direction produces the same electric current and has the same impact on a circuit as a flow of positive charges in the same direction. Because current can flow in either positive or negative charge carriers, or both, a convention for current direction that is independent of charge carrier type is required. The flow of positive charges is arbitrarily defined as the direction of conventional current. Negatively charged carriers, such as electrons (charge carriers in metal wires and many other electronic circuit components), flow in an electrical circuit in the opposite direction of typical current flow.
Current flowing through a stream of electrons will flow in the opposite direction as current flowing through a straight conductor placed parallel to the stream of electrons. Because the two currents are in opposite directions, they will reject each other.
As a result, the electron stream is dragged downward.

Hence option b is correct.

Note:
A wire element's current can flow in one of two directions. When establishing a variable I to represent current, the positive current direction must be given, which is commonly indicated by an arrow on the circuit schematic design. This is referred to as the current I's reference direction. The true direction of current through a specific circuit element is frequently unclear until the analysis is done when studying electrical circuits. As a result, current reference directions are frequently assigned at random. A negative result for the current indicates that the actual direction of current through that circuit element is opposite that of the specified reference direction when the circuit is solved.