SI unit of the permittivity of free space is________________?
Correct answer: D. N-1m-2C2
- A. Nm2C2
- B. N-1mC-2
- C. NmC-1
- D. N-1m-2C2
Explanation
From Coulomb’s law, ε₀ has units C²/(N·m²), equivalently N⁻¹m⁻²C². This corresponds to option d.
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