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An electron is accelerated through 100 V. Its energy gain in joules is
A1.6 × 10⁻²¹ J
B1.6 × 10⁻¹⁶ J
C1.6 × 10⁻¹⁷ J
D1.6 × 10⁻¹⁹ J
Answer & Solution
Correct answer: C. 1.6 × 10⁻¹⁷ J
The gain is 100 eV, and 1 eV is 1.6 × 10⁻¹⁹ J, giving 1.6 × 10⁻¹⁷ J.
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