Problem 29.66 HOW IT W Part A A conducting bar that is 30 mm long can slide with

Question

Problem 29.66 HOW IT W Part A A conducting bar that is 30 mm long can slide with negligible friction on two parallel conducting rails positioned at an incline or = 15"(Eiaurel). Initially, the bar is at rest in a magnetic field of magnitude B 0.60 T What is the emf between the rails 0.20 s after the bar starts sliding while it is still inside the magnetic field? Neglect the current in the bar. Express your answer with the appropriate units. Get a 3 Post fx aueUnits Submit My Answars Give Up Continue Figure 1 of! ind RESOUR Site Map Mobile Publishers LEARNING SERVICES Online Tutoring Chegg Study Help Solutions Manual 15°

Explanation / Answer

From Faradays Law

E = d / dt

E = d/dt (BAcos )

E = BCos dA/dt    ...(1)

u = 0

a = gsin

t= 0.2 s

= 15 deg

v = u +at

v = 0 + gsin*t

v = 9.8*sin15*0.2

v = 0.507 m/s = dB/dt

From Eqn(1)

E = BCos dA/dt

E = BCos d(l*b)/dt

E = BCos*l * db/dt
E = BCos*l *v

= 0.6*cos15*(30*10^-3)*0.507

   = 8.82*10^-3 V = 8.82 mV

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.