Page 1 - HA

Objective Questions:

1.An electric current flows into the page. What is the direction of the
magnetic field?
A. To the bottom of the page.
B. To the top of the page.
C. Clockwise.
D. Counter-clockwise.
E. To the right.
2. A current-carrying wire is placed perpendicular to the page. Determine the
direction of the electric current from the direction of the magnetic field.

A. Into the page.
B. Out of the page.
C. Clockwise.
D. Counter-clockwise.
E. To the left.
3. A vertical wire carries an electric current into the page. What is
the direction of the magnetic field at point P located to the south
from the wire?

A. West.
B. North.
C. East.
D. South.
E. Down.
4. A vertical wire carries an electric current out of the page. What is
the direction of the magnetic field at point P located to the west
from the wire?

A. West.
B. North.
C. East.
D. South.
E. Down.

5.Magnetic effect of current was discovered by
(a) Oersted
(b) Faraday
(c) Bohr
(d) Ampere