| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| A rectifier converts alternating current into this current | direct current | $200 | J | SCIENCE | 1995-06-21 | #2503 | |
| Type of electrical current that travels one way only | direct current | $400 | DJ | PHYSICAL SCIENCE | 1990-09-12 | #1383 | |
| A rectifier is an electrical device used to convert alternating current to this | direct current | $100 | J | PHYSICAL SCIENCE | 1988-01-11 | #776 |