(a) Name the poles P, Q, R and S of the magnets in the following figures 'a' and 'b': 1 / 2 + 1 / 2 + 1 = 2 Figure 'a' Figure 'b' (b) State the…

Name the poles $\displaystyle \mathrm{P}, \mathrm{Q}, \mathrm{R}$ and S of the magnets in the following figures 'a' and 'b' : $\displaystyle \mathbf{1} / \mathbf{2}+\mathbf{1} / \mathbf{2}+\mathbf{1}=\mathbf{2}$

Figure 'a' Figure 'b'

State the inference drawn about the direction of the magnetic field lines on the basis of these diagrams.

OR When is the force experienced by a current - carrying straight conductor placed in a uniform magnetic field. $\displaystyle \mathbf{1}+\mathbf{1}=\mathbf{2}$

Maximum ;

Minimum ?