Question
The peak value of an alternating current is 5 A and frequency is 60 Hz. How long will the current, starting from zero, take to reach the peak value ?
NEET
Physics
Alternating Current
2026
NEET 2026 (Cancelled)
NEET Physics Question (2026) — Solution
Options
- A. 1 120 s
- B. 1 60 s
- C. 1 30 s
- D. 1 240 s
Answer
D. 1 240 s
Step-by-step solution
The alternating current is given by I = I_0 ( t). The time taken to reach the peak value from zero corresponds to a phase angle of 2 . t = 2 2 f t = 2 t = 1 4f Given f = 60 Hz, we get: t = 1 4 60 = 1 240 s. Answer: 1 240 s
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