KCET 2023 | Current Electricity Question 7 | Physics

A moving coil galvanometer is converted into an ammeter of range 0 to $$5 \mathrm{~mA}$$. The galvanometer resistance is $$90 \Omega$$ and the shunt resistance has a value of $$10 \Omega$$. If there are 50 divisions in the galvanometer-turned-ammeter on either sides of zero, its current sensitivity is

$$2 \times 10^4 ~\mathrm{div} / \mathrm{A}$$

$$1 \times 10^5 \mathrm{~A} / \mathrm{div}$$

$$2 \times 10^4 \mathrm{~A} / \mathrm{div}$$

$$1 \times 10^5 \mathrm{div} / \mathrm{A}$$

KCET 2022

MCQ (Single Correct Answer)

-0

A charged particle is moving in an electric field of $$3 \times 10^{-10} \mathrm{Vm}^{-1}$$ with mobility $$2.5 \times 10^6 \mathrm{~m}^2 / \mathrm{V}-\mathrm{s}$$, its drift velocity is

$$8.33 \times 10^{-4} \mathrm{~m} / \mathrm{s}$$

$$1.2 \times 10^{-4} \mathrm{~m} / \mathrm{s}$$

$$25 \times 10^4 \mathrm{~m} / \mathrm{s}$$

$$7.5 \times 10^{-4} \mathrm{~m} / \mathrm{s}$$

KCET 2022

MCQ (Single Correct Answer)

-0

Wire bound resistors are made by winding the wires of an alloy of

$$\mathrm{Si}, \mathrm{Tu}, \mathrm{Fe}$$

Ge, Au, Ga

Manganin, constantan, nichrome

$$\mathrm{Cu}, \mathrm{Al}, \mathrm{Ag}$$

KCET 2022

MCQ (Single Correct Answer)

-0

10 identical cells each potential $$E$$ and internal resistance $$r$$ are connected in series to form a closed circuit

13E

10E

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