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JEE Main 2023 (Online) 25th January Evening Shift
Numerical
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Two cells are connected between points A and B as shown. Cell 1 has emf of 12 V and internal resistance of 3$$\Omega$$. Cell 2 has emf of 6V and internal resistance of 6$$\Omega$$. An external resistor R of 4$$\Omega$$ is connected across A and B. The current flowing through R will be ____________ A.

JEE Main 2023 (Online) 25th January Evening Shift Physics - Current Electricity Question 55 English

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2
JEE Main 2023 (Online) 25th January Morning Shift
Numerical
+4
-1
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In the given circuit, the equivalent resistance between the terminal A and B is __________ $$\Omega$$.

JEE Main 2023 (Online) 25th January Morning Shift Physics - Current Electricity Question 54 English

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3
JEE Main 2023 (Online) 24th January Evening Shift
Numerical
+4
-1
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If a copper wire is stretched to increase its length by 20%. The percentage increase in resistance of the wire is __________%.

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4
JEE Main 2023 (Online) 24th January Morning Shift
Numerical
+4
-1
Change Language

A hollow cylindrical conductor has length of 3.14 m, while its inner and outer diameters are 4 mm and 8 mm respectively. The resistance of the conductor is $$n\times10^{-3}\Omega$$. If the resistivity of the material is $$\mathrm{2.4\times10^{-8}\Omega m}$$. The value of $$n$$ is ___________.

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