The shape of a magnetic field surrounding a current-carrying conductor is

A) consistent with the inverse-square law.
B) radial.
C) circular.
D) all of these
E) neither of these


Answer: C

Physics & Space Science

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A heater is rated at 1200 watts for a 120-volt source.If two heaters are connected in parallel across the 120-volt source, the total power drawn from the source is __________

Fill in the blank(s) with correct word

Physics & Space Science

Order the following situations according to the magnitude of the magnetic field at the point P. Order from highest to lowest

1.ABCD 2.ADBC 3.BDAC 4.CADB 5.DABC 6.None of the above

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Transverse waves travel with a speed of 283 m/s along a taut copper wire that has a diameter of 1.50 mm. What is the tension in the wire? (The density of copper is 8.93 g/cm3.)

a. 1890 N c. 631 N b. 1260 N d. 315 N

Physics & Space Science

A significant step in "unifying" the forces of nature was the discovery that two of the so-called fundamental forces were two parts of a single force. The two forces that were so unified were

A) the electromagnetic force and the weak force. B) the electromagnetic force and the strong nuclear force. C) the electromagnetic force and the gravity force. D) the weak force and the strong nuclear force. E) the weak force and the gravity force.

Physics & Space Science