Current in a wire is for the first and then for the next

PHYSICS · Single correct · A Level · Physics · Electricity · Electricity

Problem

Current in a wire is

2.0\,\text{A}

for the first

3.0\,\text{s}

and then

0.50\,\text{A}

for the next

2.0\,\text{s}

. What total charge passes a cross-section of the wire during the entire

5.0\,\text{s}

interval? (a)

6.25\,\text{C}

(b)

7.0\,\text{C}

(c)

6.0\,\text{C}

(d)

5.0\,\text{C}