Any help would be much appreciated- with explanations for thinking please! The f

Question

Any help would be much appreciated- with explanations for thinking please!

The figure below shows two coils wound around an iron ring. Current appears in the second coil the moment when which of the following occurs? O the battery is disconnected continually with the switch open o the battery is connected continually with the switch closed the battery is disconnected by opening the switch O the battery is connected by closing the switch or the battery is disconnected by opening the switch o the battery is connected by closing the switch

Explanation / Answer

4th option is correct answer.
The battery is connected by closing the switch or the battery is disconnected by opening the switch.

Explanation :

when the sitch is closed current suddenly flows through the switch which produces magneitc filed. so, magnetic flux changes in primary coil.so, nagnetic flux through the secondaru coil also changes. Then induced current flows through the secondary coil. after switch is closed a constant current flows. which produces a constant magneticx filed. so, there is no chnage in magnetic flux in primary or secondary coils. in this case there is no induced current in secondary coil.
when the switch is opened suddnly the current in the primary coil becomes zero.so, magnetic decreases in pramary and secondary coils.so, induced current flows in opposite direction in the secondary coil.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

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