PHYSICS · Subjective · CBSE · Physics · Current Electricity · Current Electricity
Problem
At junction O three conductors meet. Two of them carry currents of 6A and 4A, both directed away from the junction. A third conductor carries a current of 5A directed towards the junction. Assume an additional current I is directed into the junction through a fourth conductor.
(a) Write the current-balance equation for the junction based on this assumption.
(b) Solve for I and state its algebraic sign.
(c) Explain what the sign obtained for I indicates about the actual direction of current in the fourth conductor.