Which device converts alternating current to direct current?

Which device converts alternating current to direct current?

• A. Rectifier
• B. Inverter
• C. Transformer
• D. Condenser

Answer: (A)

Rectification is the process of turning alternating current into direct current. A rectifier achieves this by using diodes to allow current to flow in only one direction, so the alternating waveform is converted into pulsating DC. In real devices, a smoothing capacitor often follows the rectifier to reduce ripple and produce a steadier DC output. Inverters convert DC to AC, transformers work with AC to change voltage levels, and a condenser (capacitor) stores charge or filters but does not convert AC to DC by itself.

Rectification is the process of turning alternating current into direct current. A rectifier achieves this by using diodes to allow current to flow in only one direction, so the alternating waveform is converted into pulsating DC. In real devices, a smoothing capacitor often follows the rectifier to reduce ripple and produce a steadier DC output. Inverters convert DC to AC, transformers work with AC to change voltage levels, and a condenser (capacitor) stores charge or filters but does not convert AC to DC by itself.