Equal currents of magnitude I travel into the page in wires M and N. Eight directions are indicated by letters A through H
The direction of the magnetic field at point P is
a.
B.
b.
C.
c.
D.
d.
E.
e.
F.
d
You might also like to view...
In an RLC ac circuit the current in the inductor and the current in the resistor are
A. out of phase by 90
with the current in the inductor leading.
B. out of phase by 90
with the current in the resistor leading.
C. in phase with each other.
D. out of phase by an amount proportional to frequency.
E. out of phase by an amount inversely proportional to frequency.
In the difference A - B - C, A is accurate to 5 decimal places, B is accurate to 2 decimal places, and C is accurate to 3 decimal places. What is the correct number of decimal places in the difference?
A) 2 B) 3 C) 4 D) 5 E) 0
How long ago did multicellular life forms appear in the fossil record?
A) 4.5 billion years ago B) 3.8 billion years ago C) one billion years ago D) 63 million years ago E) 30 million years ago
The Bohr radius of the hydrogen atom is 0.529 × 10-10 m. What is the radius of the n = 2 state?
A) 0.265 × 10-10 m B) 4.23 × 10-10 m C) 1.06 × 10-10 m D) 2.12 × 10-10 m E) 0.529 × 10-10 m