The current in the long, straight wire AB shown in Fig. E29.7 is upward and is increasing steadily at a rate di/dt.

(a) At an instant when the current is i, what are the magnitude and direction of the field BÌ…(vector) at a distance r to the right of the wire?

(b) What is the flux dΦ_B through the narrow, shaded strip?

(c) What is the total flux through the loop?

(d) What is the induced emf in the loop?

(e) Evaluate the numerical value of the induced emf if a = 12.0 cm, b = 36.0 cm, L = 24.0 cm, and di/dt = 9.60 A/s.

Figure E29.7

Transcribed Image Text:

- dr Кaя A