| Terms | Tools |
| Devices | Testing |
Electrical Terms
| Voltage | AC Voltage | DC Voltage |
| Current | AC Current | DC Current |
| Frequency | Power | Power Factor |
| Phase | Neutral | Ground |
| Positive | Negative | Common |
| Earthing | Oscillation | Rectifier |
| Regulator | Torque | Duty Cycle |
| Potential | RMS | Peak |
| Average |
Electrical Component
| Active | Passive |
| Resistor | Capacitor |
| Inductor |
| Diode | Transistor |
| Mosfet | igbt |
Tools
| Multimeter | CRO |
| Tester |
| Fuse | Contactor |
| MCB | Relay |
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