An electron is released from rest in a uniform upward electric field of

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

An electron

(m = 9.1\times10^{-31}\,\text{kg},\; q = -1.6\times10^{-19}\,\text{C})

is released from rest in a uniform upward electric field of

3.0\times10^{4}\,\text{N/C}

. What is the magnitude and direction of its initial acceleration? (a)

3.0\times10^{4}\,\text{m/s}^2

downward (b)

8.8\times10^{14}\,\text{m/s}^2

downward (c)

5.3\times10^{15}\,\text{m/s}^2

downward (d)

5.3\times10^{15}\,\text{m/s}^2

upward