The figure shows a cross section of three parallel wires each carrying a current of 20 A. The currents in wires A and B are out of the paper, while that in wire C is into the paper. If the distance R = 5.0 mm, what is the magnitude of the force on a 2.0-m length of wire A?





a.

23 mN



b.

64 mN



c.

32 mN



d.

46 mN



e.

55 mN


c

Physics & Space Science

You might also like to view...

Waves on a String: The density of aluminum is 2700 kg/m3. If transverse waves travel at 38 m/s in an aluminum wire of diameter 4.6 mm, what is the tension on the wire?

A. 65 N B. 39 N C. 52 N D. 78 N

Physics & Space Science

A hydrogen atom consists of a proton and an electron. If the orbital radius of the electron increases, the electric potential energy of the electron-proton system

A) increases. B) decreases. C) remains the same. D) depends on the zero point of the potential.

Physics & Space Science

The concept of the dual nature of light indicates that electromagnetic waves sometimes act like ______________

Fill in the blank(s) with correct word

Physics & Space Science

Which kind of telescope is shown and where is it located?


image
a. optical, ground b. radio, space c. radio, ground d. optical, space

Physics & Space Science