hoic Any answers NOT recorded on the Scantron answer page will NOT be counted 9.
ID: 1782731 • Letter: H
Question
hoic Any answers NOT recorded on the Scantron answer page will NOT be counted 9. A wire runs along the left edge of this page. If the free electrons in the wire are going down the edge of the page, what is the direction of the magnetic field with respect to the middle of the page (point A)? A) The field will go through point A from the left to the right across the page. B) The field will be directed into the page at point A. C) The field will go through point A from the bottom to top of the page. D) The field will be directed out of the page at point A. E) The field will be directed diagonally through point A from the upper left to lower right of the page. magnetic field directed into the page, which side of the bar has a net negative charge? A) front B) back C) top D) bottom E) right F) left determine the magnitude of the emf induced in a coil through which 10. A bar of silver (black bar at the left of the drawing) is moving from left to right across the page. If there is a 11. Whose law expressed by the formula, E-NAAt), is used to there is a changing magnetic flux? A) Ampere B) Coulomb C) Faraday D) Lenz E) Maxwell through a uniform magnetic field which is directed left to right across the page? A) right B) left C) up D) down E) into the page F) out of the page 12. Relative to the page what is the direction of the force on a positive charged particle moving down the page 13. The magnetic flux through an area is given by -BAcose, where e is the angle between which quantities? A) The plane the loop lies in and the B field. B) The normal to the plane the loop lies in and the B field. C) None of these.Explanation / Answer
9 ) If the electron charge is going downward direction currnet will be opposite to the direction of charge flow . So current will be in Y direction.
By right hand thumb rule , if we point our thumb in the direction of current and fold our fingers towards the point where we want to find the magnetic field, the curl shows the direction of magnetic field. So here the magnetic field will be into the page , so alont -Z axis.
10 ) if magntic filed is into the page , currnent goes upward, So negitive charges goes downwards or bottom
11) C) Faraday
12) F=q(vxB) v is along -y axis, B is along + x axis. So F is along + Z axis, SO out of the page
13) B
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