Two resistors ${R}_{1}=(4 \pm 0.8) \Omega$ and ${R}_{2}=(4 \pm 0.4)$ $\Omega$ are connected in parallel. The equivalent resistance of their parallel combination will be

  • [JEE MAIN 2021]
  • A

    $(4 \pm 0.4)\, \Omega$

  • B

    $(2 \pm 0.4)\, \Omega$

  • C

    $(2 \pm 0.3) \,\Omega$

  • D

    $(4 \pm 0.3) \,\Omega$

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Physical Quantity Least count of the Equipment used for measurement Observed value
Mass $({M})$ $1\; {g}$ $2\; {kg}$
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Thickness of bar $(d)$ $0.01\; {mm}$ $0.4 \;{cm}$
Depression $(\delta)$ $0.01\; {mm}$ $5 \;{mm}$

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  • [JEE MAIN 2021]

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