Question

Two very long, parallel wires carry equal currents in opposite directions. (a) Is there any place that their magnetic fields completely cancel? If so, where? If not, why not? (b) How would the answer to part (a) change if the currents were in the same direction?

Short answer

(a) No there is no any place where complete magnetic field is canceled.

(b) Yes the answer of first part can be change if current in the middle point of the distance between two wires.

Step-by-step solution

Definition of current

The term current may be defined as the ratio of charge and time.

Explain the reason of question

No there is no any place where complete magnetic field is canceled. And yes the answer of first part can be change if current in the middle point of the distance between two wires.

Hence, there is no any place where complete magnetic field is canceled. Yes the answer of first part can be change if current in the middle point of the distance between two wires.