AP EAPCET 2022 - 4th July Evening Shift | Current Electricity Question 27 | Physics

Current density in a cylindrical wire of radius $$R$$ varies with radial distance as $$\beta\left(r+r_0\right)^2$$. The current through the section of the wire shown in the figure is

AP EAPCET 2022 - 4th July Morning Shift Physics - Current Electricity Question 28 English

$$\pi \beta\left[\frac{R^4}{12}+\frac{r_0^2 R^2}{6}+\frac{2 r_0 R^3}{9}\right]$$

$$\pi \beta\left[\frac{R^4}{6}+\frac{r_0^2 R^2}{12}+\frac{r_0 R^3}{9}\right]$$

$$\pi \beta\left[\frac{R^4}{12}+\frac{r_0^2 R^2}{12}+\frac{r_0 R^3}{9}\right]$$

$$\pi \beta\left[\frac{R^4}{8}+\frac{r_0^2 R^2}{6}+\frac{r_0 R^3}{12}\right]$$

AP EAPCET 2022 - 4th July Morning Shift

MCQ (Single Correct Answer)

-0

A cell can supply currents of 1 A and 0.5 A via resistances of $$2.5 \Omega$$ and $$10 \Omega$$, respectively. The internal resistance of the cell is

$$2 \Omega$$

$$3 \Omega$$

$$4 \Omega$$

$$5 \Omega$$

AP EAPCET 2021 - 20th August Morning Shift

MCQ (Single Correct Answer)

-0

Five current carrying conductors meet at a point P. What is the magnitude and direction of the current in the fifth conductor?

AP EAPCET 2021 - 20th August Morning Shift Physics - Current Electricity Question 30 English

1A from Q to P

1A from P to Q

3A from P to Q

2A to Q to P

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Questions Asked from MCQ (Single Correct Answer)

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