When the ac generator in the drawing operates at a high frequency, is the current in the circuit greater than, less than, or the same as when the generator operates at a low frequency? The current is greater at the higher generator frequency, because the capacitor has a very large reactance and behaves as if it were cut out of the circuit, leaving a gap in the connecting wires. Therefore, the circuit behaves as a single resistor R1 connected across the generator. The current is greater at the higher generator frequency, because the capacitor has a very small reactance and behaves as if it were replaced by a wire with no resistance. Therefore, the circuit behaves as two resistors, R1 and R2, connected in parallel. The current is greater at the lower generator frequency, because the capacitor has a very small reactance and behaves as if it were replaced by a wire with no resistance. Therefore, the circuit behaves as two resistors, R1 and R2, connected in parallel. The current is greater at the lower generator frequency, because the capacitor has a very large reactance and behaves as if it were cut out of the circuit, leaving a gap in the connecting wires. Therefore, the circuit behaves as a single resistor R1 connected across the generator.