Question

I have 3 questions kindly tell me their accurate answers. Its urgent.
1-You are given an unmarked magnetized steel bar and a bar magnet, its north and south ends are marked N and S respectively. State how you would determine the polarity at each end of unmarked bar?
2-When a straight current carrying conductor is placed in a magnetic field, it experiences a force. state the rule by which the direction of this force can be found out.
3- State that a current carrying coil in a magnet field experience a tourque.
Anyone who will just write answers for gaining points I will report him/her.

Answer 1

Answer:

1. At first I will be hung this magnet. That side of the magnet will go to North,this side will be North pole and it's opposite side will be South pole.

2. The Maxwell right-hand thumb rule indicates the direction of the magnetic field in a direction of the current.

3. A current-carrying coil in a magnetic field experiences a torque that is 75% of the maximum possible torque.