1. Which of the following is true about Ampere’s discovery. A. Magnetic repulsion exists between two wires whose electric currents are caused by stationary charges. B. Magnetic attraction exists between two wires whose electric currents are flowing in different directions. C. Magnetic attraction exists between two wires whose electric currents are flowing in a similar direction. D. Magnetic repulsion exists between two wires whose electric currents are flowing in a similar direction. 2. Ampere’s Law states that A. The magnetic field due to an electric current is always independent of that current. B. The magnetic field due to an electric current is proportional to the inverse square current. C. The magnetic field due to an electric current is inversely proportional to that current. D. The magnetic field due to an electric current is proportional to that current.
1. Which of the following is true about Ampere’s discovery. A. Magnetic repulsion exists between two wires whose electric currents are caused by stationary charges. B. Magnetic attraction exists between two wires whose electric currents are flowing in different directions. C. Magnetic attraction exists between two wires whose electric currents are flowing in a similar direction. D. Magnetic repulsion exists between two wires whose electric currents are flowing in a similar direction. 2. Ampere’s Law states that A. The magnetic field due to an electric current is always independent of that current. B. The magnetic field due to an electric current is proportional to the inverse square current. C. The magnetic field due to an electric current is inversely proportional to that current. D. The magnetic field due to an electric current is proportional to that current.
1. Which of the following is true about Ampere’s discovery. A. Magnetic repulsion exists between two wires whose electric currents are caused by stationary charges. B. Magnetic attraction exists between two wires whose electric currents are flowing in different directions. C. Magnetic attraction exists between two wires whose electric currents are flowing in a similar direction. D. Magnetic repulsion exists between two wires whose electric currents are flowing in a similar direction. 2. Ampere’s Law states that A. The magnetic field due to an electric current is always independent of that current. B. The magnetic field due to an electric current is proportional to the inverse square current. C. The magnetic field due to an electric current is inversely proportional to that current. D. The magnetic field due to an electric current is proportional to that current.
1. Which of the following is true about Ampere’s discovery.
A. Magnetic repulsion exists between two wires whose electric currents are caused by stationary charges.
B. Magnetic attraction exists between two wires whose electric currents are flowing in different directions.
C. Magnetic attraction exists between two wires whose electric currents are flowing in a similar direction.
D. Magnetic repulsion exists between two wires whose electric currents are flowing in a similar direction.
2. Ampere’s Law states that
A. The magnetic field due to an electric current is always independent of that current.
B. The magnetic field due to an electric current is proportional to the inverse square current.
C. The magnetic field due to an electric current is inversely proportional to that current.
D. The magnetic field due to an electric current is proportional to that current.
3. A long, straight current-carrying wire has a circular loop with a 17.66-mm radius. If the current flowing through this closed loop is 35.5 A, what is the magnitude of the magnetic field due to this current?
A. 2.01x10^-4 T
B. 20.1x10^-4 T
C. 40.2x10^-4 T
D. 4.02x10^-4 T
4. A solenoid is being constructed to yield a uniform 0.559-T magnetic field near its center. Suppose a given extremely long wire is available to make 6 000 circular turns around this conductor. If the solenoid has to be 45.0-cm long and 6.8-cm in diameter, how much electric current is needed to produce the given field?
A. 47.88 A
B. 3.34 A
C. 33.35 A
D. 4.79 A
5. A long, straight current-carrying wire has a circular loop with a 40-mm radius. If the current flowing through this closed loop is 5.9 A, what is the magnitude of the magnetic field due to this current?
A. 3.77 x 10^-5 T
B. 1.99 x 10^-5 T
C. 4.75 x 10^-5 T
D. 2.95 x 10^-5 T
Flow of electric charges through a conductor.
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