Question

A JK flip flop behaves as a T flip flop when:

• A. $J=0, K=1$
• B. $J=1, K=0$
• C. $J=1, K=1$
• D. $J=0, K=0$

Hint:

JK becomes T flip-flop when both inputs are HIGH.

Answer 1

The Correct Option is C

Concept: JK flip-flop truth table:
• $J=0, K=0$ → No change
• $J=0, K=1$ → Reset
• $J=1, K=0$ → Set
• $J=1, K=1$ → Toggle

Step 1: Understand T flip-flop.
• T flip-flop toggles its state

Step 2: Match condition.
• Toggle occurs when $J=1, K=1$

Step 3: Conclusion. \[ \boxed{(3)\ J=1, K=1} \]