Physics · Electromagnetic Waves
In free space, the velocity of an electromagnetic wave is approximately equal to:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 13 × 108 m/s✓
- 21.6 × 10-19 C
- 36.673 × 10-11 N·m2/kg2
- 46.626 × 10-34 J·s
Correct answer
3 × 108 m/s
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