The resultant force on the current loop $PQRS$ due to a long current carrying conductor will be
The resultant force on the current loop $PQRS$ due to a long current carrying conductor will be
- A
$10^{-4}\,N$
- B
$3.6 \times {10^{ - 4}}\,N$
- C
$1.8 \times {10^{ - 4}}\,N$
- D
$5 \times {10^{ - 4}}\,N$
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- [JEE MAIN 2022]
The wires which connect the battery of an automobile to its starting motor carry a current of $300\; A$ (for a short time). What is the force per unit length between the wires if they are $70\; cm$ long and $1.5\; cm$ apart? Is the force attractive or repulsive?
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