4. (a) Calculate the value of 1/r. Record the the results in Table 5d-1. (b) Plot a graph of the amplitude of induced e.m.f. (directly proportional to the magnetic field strength B) against 1/r in Figure 5d-3
4. (a) Calculate the value of 1/r. Record the the results in Table 5d-1. (b) Plot a graph of the amplitude of induced e.m.f. (directly proportional to the magnetic field strength B) against 1/r in Figure 5d-3