Question

3. A bar magnet of magnetic moment 5.0Am has the pole 20cm apart. Calculate the pole
strength.​

Answer 1

$\huge \bf \red{answer} \:$

magnetic moment

__________

$m = pole \: strength \times magnetic \\ length \\ {mq}m \times {2}^ \ \\ magnetic \: moment = 5 {am}^{2} \\ magnetic \: length = 20cm = 0.2m \\ 5 = {q}^{m} \times 0.2 \\ qm = \frac{5}{0.2} \\ = 25am$