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JEE Main 2021 (27 Aug, Shift 2) · Ohm's Law, Resistivity & Temperature

Ohm's Law, Resistivity & Temperature question from JEE Main 2021 (27 Aug, Shift 2)

Q33JEE Main 2021 · 27 AUG · SHIFT 2Easy

Ohm's Law, Resistivity & Temperature

The Colour coding on a carbon resistor is shown in the given figure. The resistance value of the given resistor is:

Figure

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Answer: (d)

  1. Violet = 7, Green = 5, Red = multiplier 10210^2, Gold = ±5%\pm 5\%.
  2. R=75×100=7500 ΩR = 75 \times 100 = 7500\ \Omega
  3. Tolerance =5%= 5\% of 7500=375 Ω7500 = 375\ \Omega
  4. So the answer is (d) (7500±375) Ω(7500 \pm 375)\ \Omega.
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