At a junction

PHYSICS · Single correct · CBSE · Physics · Current Electricity · Current Electricity

Problem

At a junction, two currents are directed toward the junction and are given by

I_1(t)=5.0\,e^{-0.20t}\;\text{A}, \qquad I_2(t)=2.0t\;\text{A}.

A single branch carries current

I_C(t)

away from the junction. What is

I_C

t=3.0\,\text{s}

? (Take positive values to indicate current directed away from the junction.) (a)

-8.7\,\text{A}

(b)

11\,\text{A}

(c)

8.7\,\text{A}

(d)

3.3\,\text{A}