Question

A solenoid is placed along North South orientation. A current sent through the windings
appears to be going clockwise as seen from the north side. To which direction will a
mpass needle point if placed inside the solenoid ? Assume the current to be strong
enough.


⚠️This is a 2 marks question⚠️
plz help me. i have an exam today​

Answer 1

Answer:

As we all known solenoid is an insulating copper wire wrapped in a loop of chain

therefore neddle will go from north to south

Answer 2

GIVEN THAT ,THE CURRENT IS STRONG ENOUGH ..

SO ,THE MAGNETIC FIELD PRODUCED BY THE SOLENOID WILL BE STRONGER THAN EARTH'S MAGNETIC FIELD..

THUS ,THE COMPASS NEEDLE WILL BE DEFLECTED BY THE SOLENOID'S FIELD AND NOT BY EARTH'S FIELD ..

AS SEEN FROM NORTH ,THE CURRENT GOES CLOCKWISE ,SO THE NORTH SIDE WILL BECOME THE SOUTH POLE AND VICE VERSA..

THEREFORE ,THE COMPASS NEEDLE WOULD POINT IN THE SOUTH DIRECTION AS ON THAT SIDE ,THERE IS THE NORTH POLE OF THE SOLENOID..