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

Question 2

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... 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

An alpha particle, composed of two protons and two neutrons, has a positive charge. Since each proton has a charge of +1.6 x 10⁻¹⁹ C, the total charge of the alpha particle is:

ext{Charge of alpha particle} = 2 imes (1.6 imes 10^{-19} ext{ C}) = +3.2 imes 10^{-19} ext{ C}

Thus, the correct choice is:

☑ D +3.2 x 10⁻¹⁹ C.

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