At node Q, currents of and enter along two branches, while a current of leaves along…

PHYSICS · Subjective · CBSE · Physics · Current Electricity · Current Electricity

Problem

At node Q, currents of

2.0\,\text{A}

and

4.5\,\text{A}

enter along two branches, while a current of

6.8\,\text{A}

leaves along a third branch. Assuming the current

I

in a fourth branch is directed out of the node, determine the value of

I

and state whether the assumed direction is correct.