An electron is at the origin. (a) Calculate the electric potential V A at point

Question

An electron is at the origin. (a) Calculate the electric potentialVA at point A, x =0.360 cm.
1

(b) Calculate the electric potentialVB at point B, x =0.570 cm.
2

What is the potential difference VB -VA?


(c) Would a negatively charged particle placed at point Anecessarily go through this same potential difference upon reachingpoint B? Explain
4
(a) Calculate the electric potentialVA at point A, x =0.360 cm.
1

(b) Calculate the electric potentialVB at point B, x =0.570 cm.
2

What is the potential difference VB -VA?


(c) Would a negatively charged particle placed at point Anecessarily go through this same potential difference upon reachingpoint B? Explain
4

Explanation / Answer

Charge of electron q = 1.6 * 10 ^ -19 C (a). distanc eof the point A from origin r = 0.36 cm =0.0036 m Potential at point A is V = K q / r where K = coulomb's constant = 8.99 * 10 ^ 9 N m ^2 / C ^ 2      So, V = 3995.55 * 10 ^ -10 Volts (b). distanc eof the point B from origin r ' =0.57 cm = 0.0057 m Potential at point A is V ' = K q / r where K = coulomb's constant = 8.99 * 10 ^ 9 N m ^2 / C ^ 2      So, V = 2523.5* 10 ^ -10 Volts   Potential difference V ' - V = - 1472 * 10 ^ -10Volts (c). No, SInce potential difference is depend onmagnitude of charge of the particle.      Potential at point A is V ' = K q / r where K = coulomb's constant = 8.99 * 10 ^ 9 N m ^2 / C ^ 2      So, V = 2523.5* 10 ^ -10 Volts   Potential difference V ' - V = - 1472 * 10 ^ -10Volts (c). No, SInce potential difference is depend onmagnitude of charge of the particle.

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