Bright Tutorials Bright Tutorials
ICSE Class 10 Physics Question 5 of 136

Electro-magnetism — Question 5

Back to all questions
5
Question

Question 5

The diagram in figure shows a spiral coil wound on a hollow cardboard tube AB. A magnetic compass is placed close to it. Current is switched on by closing the key.

The diagram in figure shows a spiral coil wound on a hollow cardboard tube AB. A magnetic compass is placed close to it. Current is switched on by closing the key. What will be the polarity at the ends A and B? How will the compass needle be affected? Give reason. Electromagnetism, Concise Physics Solutions ICSE Class 10.

(a) What will be the polarity at the ends A and B?

(b) How will the compass needle be affected? Give reason.

Answer

(a) With the help of the Right hand thumb rule, we get the polarity at A — North pole and at B — South pole.

(b) The end A of the coil behaves like north pole and repels north pole of compass needle. Hence, the compass needle deflects towards west.