In Fig. 20–9, the ammeter, M1, reads an ac current of 25 mA with S1, in position 2.a. Why...

In Fig. 20–9, the ammeter, M1, reads an ac current of 25 mA with S1, in position 2.

a. Why is there less current in the circuit with S1, in position 2 compared to position 1?

b. How much is the inductive reactance, XL, of the coil? (Ignore the effect of the coil resistance, ri.)

Figure 20–9