What is the polarity induced at the ends A and B when the switch is pressed?

Open in App

Solution

When the switch is pressed, the current starts to flow from A to B. As seen from below of A, the current flows clockwise and thus the polarity of A is South pole and so the polarity of B is North pole.

Suggest Corrections

Similar questions

Q. An inductor is connected to a battery through

e_{1}

switch induced emf is a when the switch is pressed and

e_{2}

when the switch is opened. Then:

Q. For the coil in the diagram below, when the switch is pressed:

(a) what is the polarity of end A?
(b) which way will the compass point then?

Q. The diagram shows a coil wound around a soft iron bar XY. State the polarity at the ends X and Y as the switch is pressed

Fig. 10.18 shows a coil wound around a soft iron bar XY. (a) State the polarity at the ends X and Y as the switch is pressed. (b) Suggest one way of increasing the strength of electromagnet so formed.

Q. The adjacent diagram shows a small magnet placed near a solenoid AB with its north pole N near the end A. Current is switched on in the solenoid by pressing the key K. State the polarity at the ends A and B:

Join BYJU'S Learning Program