Conceptual Physics

Chapter Assumptions

Unless stated otherwise, use 5.00×10–5 T for the strength of the Earth's magnetic field at its surface.

Elementary charge, e = 1.60×10–19 C

Answers to selected problems

Chapter 29 Answers

C.1 No

Answers vary

C.4 Counterclockwise

Answers vary

C.7 (a) Counterclockwise

(b) Clockwise

(c) Answers vary

C.9 (a) The same direction

Answers vary

(b) Answers vary

0.1 (a) No

(b) Yes

(c) Yes

2.1 (a) Yes

(b) The induced emf increases when the wire moves faster.

(c) The induced emf increases when the field strength increases.

(d) Answers vary

5.1 0.500 m

5.3 0.808 V

6.1 4.25 Wb

7.1 12.9 T· m^2

7.3 1.13eí6 A

8.1 8.00 ms

11.1 (a) The emf is a maximum when the velocity vector is Perpendicular to the magnetic field.

(b) The emf is zero when the velocity vector is Parallel to the magnetic field.

(c) Yes

(d) Yes

12.1 0.021 s

13.1 (a) 0.2 A

(b) 2.0 V

(c) 1.0e6 Hz

15.1 1.50e+3 turns

15.3 26.2

15.5 (a) 7.75e3 for 100,000 V

1.74e4 for 225,000 V

2.67e4 for 345,000 V

(b) 900 A for 100,000 V

400 A for 225,000 V

261 A for 345,000 V

(c) 9.07e7 W for 100,000 V

1.79e7 W for 225,000 V

7.63e6 W for 345,000 V

(d) Answers vary

17.1 20 V

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