An electron has a charge of –1.6 x 10^-19 C. An alpha (α) particle is a helium nucleus. A beta particle is a fast moving electron. Complete the sentence by putting a cross (✗) in the box next to your answer. The charge carried by an alpha particle is A –1.6 x 10^-19 C B +1.6 x 10^-19 C C –3.2 x 10^-19 C D +3.2 x 10^-19 C

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An electron has a charge of –1.6 x 10^-19 C - Edexcel - GCSE Physics - Question 2 - 2016 - Paper 1

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An electron has a charge of –1.6 x 10^-19 C. An alpha (α) particle is a helium nucleus. A beta particle is a fast moving electron. Complete the sentence by puttin... show full transcript

Worked Solution & Example Answer:An electron has a charge of –1.6 x 10^-19 C - Edexcel - GCSE Physics - Question 2 - 2016 - Paper 1

Step 1

The charge carried by an alpha particle is

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Answer

Since an alpha particle consists of two protons and two neutrons, it carries a net positive charge. Each proton has a charge of +1.6 x 10^-19 C. Thus, the total charge of the alpha particle is:

$2 imes (+1.6 imes 10^{-19} ext{C}) = +3.2 imes 10^{-19} ext{C}$

Therefore, the correct answer is:

✗ D +3.2 x 10^-19 C

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