A charge is fixed at the origin

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

Problem

A charge

q_1=+0.80\,\mu\text{C}

is fixed at the origin. A second charge

q_2=+0.10\,\mu\text{C}

has an

x

-coordinate of

0.030\,\text{m}

. The force on

q_2

due to

q_1

is measured as

(0.40\,\hat i-0.30\,\hat j)\,\text{N}

. Determine the

y

-coordinate of

q_2

. (a)

+0.0225\,\text{m}

(b)

-0.0450\,\text{m}

(c)

-0.0225\,\text{m}

(d)

-0.0180\,\text{m}

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