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Two long wires are hanging freely. They ...

Two long wires are hanging freely. They are joined first in parallel and then in series and then are connected with a battery. In both cases, which type of force acts between the two wires

A

Attraction force when in parallel and repulsion force when in series

B

Repulsion force when in parallel and attraction force when in series

C

Repulsion force in both cases

D

Attraction force in both cases

Text Solution

AI Generated Solution

The correct Answer is:
To solve the problem, we need to analyze the behavior of two long wires connected in different configurations (parallel and series) and determine the type of force acting between them based on the direction of the current flowing through each wire. ### Step-by-Step Solution: 1. **Understanding the Setup**: - We have two long wires that can carry electric current. - The wires are connected to a battery, which will provide current to them. 2. **Analyzing the Parallel Connection**: - When the wires are connected in parallel, the current flowing through both wires is in the same direction. - According to the right-hand rule and the principles of electromagnetism, when two parallel wires carry current in the same direction, they exert an attractive force on each other. 3. **Conclusion for Parallel Connection**: - Therefore, when the wires are connected in parallel, the type of force acting between them is **attraction**. 4. **Analyzing the Series Connection**: - When the wires are connected in series, the current flowing through them is in opposite directions. - Again, applying the right-hand rule, when two wires carry current in opposite directions, they exert a repulsive force on each other. 5. **Conclusion for Series Connection**: - Thus, when the wires are connected in series, the type of force acting between them is **repulsion**. 6. **Final Answer**: - In summary, the forces acting between the two wires are: - **Attraction when connected in parallel** - **Repulsion when connected in series** ### Final Answer: The correct answer is: **Attraction force when in parallel and repulsion force when in series** (Option A). ---
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