A charged particle would continue to move with a constant velocity in a region wherein,
| (A) | \(E=0, ~B\ne0\) |
| (B) | \(E\ne0, ~B\ne0\) |
| (C) | \(E\ne0, ~B=0\) |
| (D) | \(E=0, ~B=0\) |
Choose the correct option:
1. (A), (C)
2. (B), (D)
3. (B), (C), (D)
4. (C), (D)
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