Could someone explain how to get the answer to question 3. I\'m unsure of how to
ID: 1601697 • Letter: C
Question
Could someone explain how to get the answer to question 3. I'm unsure of how to use the right hand rule to determine the answer, specifically how to know if the current would flow through the circular loop or not. d n indica e a The diagram below she a long straight wire and a circular loop of wire lying flat on table beside each other. The long straight wire is connected to a power supply (not shown). The next six questions all relate to this diagram. In answering the questions, first use Right Hand Rule #2 on long straight wire to determine the direction the magnetic field through the circular loop, and then note whether the number of magnetic field lines through the circular loop is increasing, decreasing, or unchanging. 3. Assume that a steady, unchanging current is flowing in the long straight wire from left to right. Does this cause a current to flow in the circular loop and, if it does, will the flow be clockwise or counterclockwise? Explain.Explanation / Answer
magnetic field due to long wire B = uo*I/(2*pi*r)
magnetic flux = B*A
induced emf e = rate of change in flux
current i = e/R
as the current in the straight wire is steady,
the magnetic field is constant and thus the magnetic flux is constant
as ther is no change in flux
there is no induced emf and no induced current