R Ram Sharma 🎓 Coach ⭐ 193.88K Points 📊 Physics Q. The frequency of direct current is _______ (A) 100 HZ (B) 60 HZ (C) 50 HZ (D) 0 👁️ Show Answer 🔗 Share ⚡Menu ✅ Correct Answer: (D) 0 You must be Logged in to update hint/solution 💬 Discussion 💬 Comment