AP EAPCET 2025 - 24th May Morning Shift | Current Electricity Question 7 | Physics

The potential difference across a conducting wire of length 20 cm is 30 V . If the electron mobility is $2 \times 10^{-6} \mathrm{~m}^2 \mathrm{~V}^{-1} \mathrm{~s}^{-1}$, then the drift velocity of the electrons is

$3 \times 10^{-3} \mathrm{~ms}^{-1}$

$1.5 \times 10^{-3} \mathrm{~ms}^{-1}$

$1.5 \times 10^{-4} \mathrm{~ms}^{-1}$

$3 \times 10^{-4} \mathrm{~ms}^{-1}$

AP EAPCET 2025 - 24th May Morning Shift

MCQ (Single Correct Answer)

-0

A maximum current of 0.5 mA can pass through a galvanometer of resistance $15 \Omega$. The resistance to be connected in series to the galvanometer to convert it into a voltmeter of range $0-10 \mathrm{~V}$ is

$9985 \Omega$

$20015 \Omega$

$20000 \Omega$

$19985 \Omega$

AP EAPCET 2025 - 23rd May Evening Shift

MCQ (Single Correct Answer)

-0

A part of a circuit is shown in the figure. The ratio of the potential differences between the points $A$ and $C$ and the points $D$ and $E$ is

AP EAPCET 2025 - 23rd May Evening Shift Physics - Current Electricity Question 8 English

$4: 5$

$2: 3$

$8: 15$

$11: 15$

AP EAPCET 2025 - 23rd May Evening Shift

MCQ (Single Correct Answer)

-0

A DC supply of 160 V is used to charge a battery of emf 10 V and internal resistance $1 \Omega$ by connecting a series resistance of $24 \Omega$. The terminal voltage of the battery during charging is

8 V

12 V

16 V

4 V

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