15 (a) Calculate the value of 1/l. Record the results in Table 5d-4. (B) Plot a graph of amplitude of induce e.m.f. (directly proportional to the magnetic field strength B) against 1/l in Figure 5d-7
15 (a) Calculate the value of 1/l. Record the results in Table 5d-4. (B) Plot a graph of amplitude of induce e.m.f. (directly proportional to the magnetic field strength B) against 1/l in Figure 5d-7