An inductor and a resistor are in series with a sinusoidal voltage source. The frequency is set so that the inductive reactance is equal to the resistance. If the frequency is increased, then(A) VL 2VR(B)VL VR(C) VL VR(D)VR VL
Perhaps you could define VL and VR? my first assumption VR is the input voltage and VL is the output (load) voltage, but my second guess is voltage across resistor and voltage across inductor. initially, VL VR. As you increase frequency, VL goes up, therefore VR goes down. A) VL 2VR false, as increase in frequency is not defined (B) VL VR false, as this is the initial condition (C) VL VR true (D) VR VL false
C. Inductive reactance increases with frequency. Z 2piFL.
