JEE Main 2025 (Online) 3rd April Morning Shift | Current Electricity Question 35 | Physics

A wire of length 25 m and cross-sectional area $5 \mathrm{~mm}^2$ having resistivity of $2 \times 10^{-6} \Omega \mathrm{~m}$ is bent into a complete circle. The resistance between diametrically opposite points will be

$100 \Omega$

$2.5 \Omega$

$12.5 \Omega$

$50 \Omega$

JEE Main 2025 (Online) 2nd April Morning Shift

MCQ (Single Correct Answer)

-1

The battery of a mobile phone is rated as $4.2 \mathrm{~V}, 5800 \mathrm{~mAh}$. How much energy is stored ir it when fully charged?

87.7 kJ

43.8 kJ

48.7 kJ

24.4 kJ

JEE Main 2025 (Online) 28th January Morning Shift

MCQ (Single Correct Answer)

-1

Find the equivalent resistance between two ends of the following circuit

JEE Main 2025 (Online) 28th January Morning Shift Physics - Current Electricity Question 38 English

$\frac{\mathrm{r}}{6}$

$\frac{\mathrm{r}}{3}$

$\frac{r}{9}$

JEE Main 2025 (Online) 28th January Morning Shift

MCQ (Single Correct Answer)

-1

A wire of resistance R is bent into an equilateral triangle and an identical wire is bent into $a$ square. The ratio of resistance between the two end points of an edge of the triangle to that of the square is

$8 / 9$

$9 / 8$

$32 / 27$

$27 / 32$

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