At t = 0, a coil with a self-inductance of 6.0 H carries a current of 5 A that i

Question

At t = 0, a coil with a self-inductance of 6.0 H carries a current of 5 A that is changing at a rate of 210 A/s. (a) Find the magnetic flux through the coil. Express your answer in the form of 0 + a t and give the values of 0 and a 0 = _______ Wb [3.33 points] 0 attempt(s) made (maximum allowed for credit = 5) [after that, multiply credit by 0.5 up to 10 attempts] a =_______ Wb/s [3.33 points] 0 attempt(s) made (maximum allowed for credit = 5) [after that, multiply credit by 0.5 up to 10 attempts] (b) Find the induced emf in the coil at t = 0. (Use the standard sign convention.) _________ V

Explanation / Answer

At t = 0, a coil with a self-inductance of 6.0 H carries a current of 5 A that is changing at a rate of 210 A/s.

(a) Find the magnetic flux through the coil. Express your answer in the form of 0 + a t and give the values

= I L = (5+210t)*6 = 30 + 1260 t

0 = 30 Wb

a = 1260 Wb/s

(b) Find the induced emf in the coil at t = 0. (Use the standard sign convention.) _________ V

= -L dI/dt = -6*210 = -1260 V

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

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