l) W hat is the terminal voltage across the bat- (ii) nce the switch is closed,

Question

l) W hat is the terminal voltage across the bat- (ii) nce the switch is closed, what is the new terminal voltage? You can treat the switch as a perfect conductor having no resistance. II. (a) (10 points) Consider the circuit at right The EMF is E 12.0 V, R 4.02, R 8.00, R 8.00, and L 15.0 mH L (i) What is the current through the R3 the in- stant after the switch is closed? (ii) at is the current through the battery the instant after the switch is closed? (iii) What is the current through the Ra a long time after after the switch is closed? (b) (10 points) The figure at right illustrates the case in which a current I 75 A flows where l 18 cm and w 12 cm. The loop lies in the T-u plane as shown. The magnetic

Explanation / Answer

Part i)- As we know that inductor has a property that it oppose the change in it. It means that initially there is NO current in inductor then after colsing the circuit It will behave like an open circuit (Like No current will flow in it)

Then-

Circuit will be opened at inductor terminals. and current through R3 will also be zero because Inductor and R3 are in same branch, which is behave like a open circuit.

Part ii)-

Req = R1+R2

=12 ohm

I = V/Req

= 12/12 = 1 A (Current through the battery)

Part iii)-

After long time, The inductor behave like short circuit about its terminals then-

Req = R1 + (R2 || R3)

= 4 + 4

= 8 ohm

I = V/Req

= 12/8 = 1.5 A

I3 (Trough R3 ) = I (R2 / R2+R3)

=(1.5)(8/16)

= 0.75 A

Thank you !!! Have fun

Related Questions

Navigate

• Browse (All)
• Browse L
• Subjects

---

---

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