An electric field does 1.92 x 10⁻¹⁸ J of work in moving a positively charged particle across a potential difference of 12 V. What is the charge of the particle?
1) 2.3 x 10⁻¹⁷ C
2) 6.25 x 10¹⁹ C
3) 1.6 x 10⁻¹⁹ C