کسی بھی شے میں کم سے کم تبدیلی _____ سے کم نہیں ہوسکتی ہے؟
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A. 1.6 × 10⁹C
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B. 1.6 × 10-¹⁹C
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C. None of these
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D. 1.6 × 10¹⁰C
Explanation
Charge is quantized and exists in discrete amounts.
The smallest possible charge is that of a single electron or proton, which is 1.6 × 10−¹⁹C.
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A. –1.6 × 10⁻¹⁸ C
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B. –1.6 × 10⁻²⁰ C
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C. –1.6 × 10⁻¹⁹ C
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D. –3.2 × 10⁻¹⁹ C
Explanation
- The elementary charge on a single electron is -1.6 × 10⁻¹⁹ coulombs.
- It’s a fundamental physical constant.
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A. None of these
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B. Maxwell
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C. Millikan
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D. Ampere
Explanation
The charge of an electron was experimentally determined by Robert A. Millikan through his famous Oil Drop Experiment in 1909.
He measured the smallest unit of electric charge, which is the elementary charge (e):
e=1.602×10^−19 Coulombs
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