When a compass needle is held arbitrarily in any direction in earth's magnetic field, a couple acts on the needle. The force on north pole of needle is towards the north and force on south pole of the needle is towards south. These forces are equal in magnitude and opposite in direction. They from a couple, which rotates the compass needle and aligns it along north south direction. Once the alignment is complete, net force and net torque on the compass needle reduce to zero.
Read the above passage and answer the following :
(i) What is the origin of force and torque on the compass needle ?
(ii) What values of life do you learn from this study ?

Explanation

### Step-by-Step Solution:

**(i) What is the origin of force and torque on the compass needle?**

1. **Understanding the Compass Needle**: A compass needle is a small magnet that aligns itself with the Earth's magnetic field. The needle has a north pole and a south pole.

2. **Magnetic Forces Acting on the Needle**: When the compass needle is placed in the Earth's magnetic field, the north pole of the needle experiences a magnetic force that pulls it towards the magnetic north. Similarly, the south pole of the needle experiences a force that pulls it towards the magnetic south.

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