JEE Main 2023 (Online) 29th January Morning Shift | Current Electricity Question 80 | Physics

A uniform metallic wire carries a current 2 A, when 3.4 V battery is connected across it. The mass of uniform metallic wire is 8.92 $$\times$$ 10$$^{-3}$$ kg, density is 8.92 $$\times$$ 10$$^{3}$$ kg/m$$^3$$ and resistivity is 1.7 $$\times$$ 10$$^{-8}~\Omega$$-$$\mathrm{m}$$. The length of wire is :

$$l=100$$ m

$$l=6.8$$ m

$$l=5$$ m

$$l=10$$ m

JEE Main 2023 (Online) 24th January Evening Shift

MCQ (Single Correct Answer)

-1

A cell of emf 90 V is connected across series combination of two resistors each of 100$$\Omega$$ resistance. A voltmeter of resistance 400$$\Omega$$ is used to measure the potential difference across each resistor. The reading of the voltmeter will be :

40 V

90 V

45 V

80 V

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