An element is said to have negative resistance when
- A. The element has negative temperature coefficient
- B. The current / voltage curve has negative slope
- C. The element has negative specific resistance
- D. The current / voltage curve has a positive slope
Answer: B. The current / voltage curve has negative slope
Explanation: Dynamic negative resistance is characterized by a region in the I-V curve where incremental resistance dV/dI < 0 (negative slope), as seen in tunnel diodes.