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Magnetic Effect of Current — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsMagnetic Effect of Current1 Mark
MCQ
Two straight parallel wires, both carrying 10 ampere in the same direction attract each other with a force of $1\times 10^{-3}$N. If both currents are doubled, the force of attraction will be
  • A
    $ 1\times 10^{-3}$N
  • B
    $2 \times 10^{-3}$N
  • ✓
    $ 4 \times 10^{-3}$N
  • D
    $ 0.25 \times 10^{-3}$N
✓

Answer

Correct option: C.
$ 4 \times 10^{-3}$N
(c)$ 4\times 10^{-3}$N

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