a. When voltage is first applied to a series LR circuit, how much opposition does the inductance
have to the flow of current compared to that of the circuit resistance?
b. In a series circuit containing a resistor (R1) and an inductor (L1), what voltage exists across
R1 when the counter emf is at its maximum value?
c. What happens to the voltage across the resistance in an LR circuit during current buildup in
the circuit, and during current decay in the circuit?
- a. Inductance causes a very large opposition to the flow of current when voltage is first applied
- to an LR circuit; resistance causes comparatively little opposition to current at that time.
- b. Zero.
- c. During current buildup, the voltage across the resistor gradually increases to the same
- voltage as the source voltage; and during current decay the voltage across the resistor
- gradually drops to zero