Question

Two long parallel wires carrying currents in the same direction will:

• A. Repel each other
• B. Attract each other
• C. Produce no force
• D. Rotate about each other

Hint:

For parallel current-carrying conductors: \[ \text{Same direction currents} \rightarrow \text{Attraction} \] \[ \text{Opposite direction currents} \rightarrow \text{Repulsion} \]

Answer 1

The Correct Option is B

When current flows through a wire, it produces a magnetic field around it.
Two parallel current-carrying wires exert magnetic forces on each other.

Step 1: Rule for parallel currents
• Currents in the same direction: \[ \text{Attract each other} \]
• Currents in opposite directions: \[ \text{Repel each other} \]
Step 2: Apply the rule
Since both wires carry current in: \[ \text{the same direction} \] they experience: \[ \text{mutual attraction} \] Thus: \[ \boxed{\text{The wires attract each other}} \] Option analysis:
• Option (A): Incorrect
• Option (B): Correct
• Option (C): Incorrect
• Option (D): Incorrect Therefore: \[ \boxed{\text{(B)}} \]