Figure 24.

Operation of circuit elements.

this is done, current will flow through resistor R1 in the first path.

Since a

resistor offers the same opposition to ac as to dc, the current flowing in this

path will be the same regardless of whether ac or dc is applied to the circuit. In

the second path, the impedance will be high, due principally to the very high

reactance of the capacitor. Very little current will flow in this path, so most of

the applied voltage will appear across the capacitor, and a small voltage across

the resistor.

The impedance of the third path will be low because of the low

reactance of the coil at low frequencies.

The current in this branch will,

therefore, be quite large. The voltage across the resistor will be large because

of the high current, and the voltage across the coil will be small because of the

small reactance.