Pulsed current is defined as?

• A. A continuous direct current
• B. An interrupted DC current
• C. A pure AC sine wave
• D. A constant magnitude waveform

Answer: (B)

Pulsed current consists of current flowing in bursts with intervals of zero current in between. During each burst the current has the same direction (like DC), but the on/off pattern creates a train of pulses. This is why it’s described as an interrupted DC current. It isn’t a continuous DC signal because there are breaks where no current flows, and it isn’t a pure AC sine wave because AC continuously reverses polarity, not simply switch on and off. It also isn’t just a constant magnitude the whole time, since the current is absent during the off periods between pulses.