Zack places a small wire circle so that it is inside a larger wire. The larger w

Question

Zack places a small wire circle so that it is inside a larger wire. The larger wire is connected to a battery and switch, see figure (Figure 1). In what direction is the induced current in the small circle, immediately after the switch S is closed? clockwise no induced current counterclockwise What is the direction of the current induced in the small circle a long time after the switch was closed? clockwise no induced current counterclockwise What about the direction of the induced current in the small circle immediately after the switch S is reopened, after being closed for a long period? clockwise no induced current counterclockwise

Explanation / Answer

here,

a)

as the current in the large loop is clockwise and the flux is also increasing

using Lenz's law

the induced current is counterclockwise

b)

when the switch is closed

there is no change in current ,

so no current induced

c)

when the switch is reopened

the flux through the small loop is decreasing

so , the induced current should be such that to increse the flux

using Lenz's law

the induced current is clockwise

Related Questions

Navigate

• Browse (All)
• Browse Z
• Subjects

---

---

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