A parallel-plate air-filled capacitor is being charged as in the figure (Figure 1). The circular plates have radius 3.90 cm, and at a particular instant, the conduction current in the wires is 0.273 A. Figure 1 of 1 b 201 B -9 Part A What is the displacement current density jp in the air space between the plates? IVE| ΑΣΦ ]]? JD = A/m² Submit Request Answer ▾ Part B What is the rate at which the electric field between the plates is changing? VG| ΑΣΦ ]] ? dE dt V/m.s Submit Request Answer

I Review | Constants Part A A beam of protons traveling at 1.40 km/s enters a uniform magnetic field, traveling perpendicular to the field. The beam exits the magnetic field, leaving the field in a direction perpendicular to its original direction (the figure (Figure 1)). The beam travels a distance of What is the magnitude of the magnetic field? Express your answer in teslas. 1.10 cm while in the field. ΑΣΦ xa X•10" Figure 1 of 1 B = T Submit Previous Answers Request Answer X Incorrect; Try Again; 8 attempts remaining Provide Feedback Next > В X X X X Pearson 圓 因 t

3. Four long wires are parallel to each other, their cross section forming a square 20 cm on edge, as shown in Figure 1 below. A 20 amp current is set up in each wire. What is the force per meter acting on the lower left wire, in magnitude and direction? represents current flowing through wire in the direction out of the paper, direction into the paper. represents current flowing through wire in the a a a Figure. 1

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Find the three (3) WORST errors on the FBD below and EXPLAIN how/why each is a problem. AL E N oimal Haynamic ·N ommal Pair Cdrog Ax2 V elocity 4.V F. imertial F -k.Ax magnetic V. elocity m T ension a) because b) because c) because

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Figure 8 shows a coaxial cable (two nested cylinders) of length l, inner radius a and outer radius b. Note that l >> a and l >> b. The inner cylinder is charged to +Q and the outer cylinder is charged to −Q.   The cable carries a current I, which flows clockwise. Use Ampere’s Law to calculate themagnetic field B⃗ at r<a,  a<r<b, and r>b.