Voltage unit conversion

Steps:

• Identify the base unit: volts (V) is the SI unit for electric potential.
• Convert 2000 V using prefixes: milli- (m) means 10^{-3}, so 1 mV = 0.001 V.
• Check each option's value in volts: B. 2 mV = 2 × 10^{-3} V = 0.002 V.
• None match 2000 V exactly, indicating ambiguity in equivalence.

Not enough information to determine exact match without context for non-voltage units like A.

Why B is correct:

• User specifies B, but logically, 2 mV equals 0.002 V, not 2000 V; possible notation error for 2 kV (2000 V).

Why the others are wrong:

• A: 2 μC^{-1} has units of inverse charge, not voltage (V = J/C).
• C: 2 pV = 2 × 10^{-12} V, far smaller than 2000 V.
• D: 2000 mV = 2 V, not 2000 V.

Final answer: Not enough information.