A straight wire is carrying a current upward. Observed from above (i.e., looking downward towards the wire), the magnetic field lines are
A. radially outward.
B. radially inward.
C. forming clockwise circles.
D. forming counter-clockwise circles.
E. directed toward the observer.
D. forming counter-clockwise circles.
You might also like to view...
The velocity needed to stay in a round orbit is called the__________
A) circular velocity B) linear velocity C) vertical velocity D) horizontal velocity
The parallax of the star 75 Leo is 0.10 and its apparent visual magnitude is +5.18 . The absolute visual magnitude of 75 Leo is ____________________
Fill in the blank(s) with correct word
If each element in this circuit has a resistance of 12 
, what is the resistance of the entire circuit?
Suppose that you wish to construct a simple ac generator having an output of 12 V maximum when rotated at 60 Hz. A uniform magnetic field of 0.050 T is available. If the area of the rotating coil is 100 cm2, how many turns do you need?
A) 8 B) 16 C) 32 D) 64 E) 128