A solenoid has an inductance of L = 3.3 H and carries a current of I = 15 A. (e)

Question

A solenoid has an inductance of L = 3.3 H and carries a current of I = 15 A.


(e) If the current goes from 15 to 0 A in a time of 75 ms, what is the emf induced across the solenoid?
E= ____Sign ____Number _____Unit


(f) How much electrical energy E is stored in the solenoid?
E =____Number _____Unit


(g) At what rate P must the electrical energy be removed from the solenoid when the current is reduced to 0 A in a time of 75 ms? Note that the rate at which energy is removed is the power.
P = ____Number _____Unit

Explanation / Answer

e) E= -L di/dt E= - 3.3*(0-15)/0.075=660 Volts f) E=1/2* L* I^2=371.25 Joules g) P*0.075=371.25=4950 W

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

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