Question

A plotting compass is placed inside a solenoid and the compass needle is pointing in
the direction as shown in figure.
Complete the diagram by drawing arrow heads to indicate the direction of the
current flow
(1) Describe the direction of the magnetic field inside the solenoid.
(mm) If key K is opened, what will happen to the compass needle?
Solenoid
muuntamo
Compass
K​

Answer 1

Explanation:

Right-hand rule can be used to find the direction of the magnetic field. In this case, point the wrapped fingers (along the coil) in the direction of the conventional current. Then, the thumb will point to the direction of magnetic field within the solenoid.