Current Electricity · Physics · AP EAPCET

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MCQ (Single Correct Answer)

1
Five equal resistances each $2 R$ connected as shown in figure. A battery of $V$ volts connected between $A$ and $B$. Then, current through $F C$ is AP EAPCET 2024 - 21th May Morning Shift Physics - Current Electricity Question 1 English
AP EAPCET 2024 - 21th May Morning Shift
2
A lamp is rated at $240 \mathrm{~V}, 60 \mathrm{~W}$. When in use the resistance of the filament of the lamp is 20 times that of cold filament. The resistance of the lamp when not in use is
AP EAPCET 2024 - 21th May Morning Shift
3
A straight wire of resistance $R$ is bent in the shape of $f_d$ square. A cell of emf 12 V is connected between two adjacent corners of the square. The potential difference across any diagonal of the square is
AP EAPCET 2024 - 20th May Evening Shift
4
In the given circuit, if the potential at point $B$ is 24 V , the potential at point $A$ is

AP EAPCET 2024 - 20th May Evening Shift Physics - Current Electricity Question 3 English

AP EAPCET 2024 - 20th May Evening Shift
5
A block has dimensions $1 \mathrm{~cm}, 2 \mathrm{~cm}$ and 3 cm . Ratio of the maximum resistance to minimum resistance between any palr of opposite faces of the block is
AP EAPCET 2024 - 20th May Morning Shift
6
A current of 6 A enters one corner $P$ of an equilateral triangle $P Q R$ having three wires of resistance $2 \Omega$ each and leaves by the corner $R$ as shown in figure. Then the currents $I_1$ and $I_2$ are respectively AP EAPCET 2024 - 20th May Morning Shift Physics - Current Electricity Question 5 English
AP EAPCET 2024 - 20th May Morning Shift
7
The value of shunt resistance that allows only $10 \%$ of main current through the galvanometer of resistance $99 \Omega$ is
AP EAPCET 2024 - 20th May Morning Shift
8
A steady current is flowing in a metallic conductor of non-uniform cross-section. The physical quantity which remains constant is
AP EAPCET 2024 - 19th May Evening Shift
9
The resistance between points $A$ and $C$ in the given network is AP EAPCET 2024 - 19th May Evening Shift Physics - Current Electricity Question 11 English
AP EAPCET 2024 - 19th May Evening Shift
10
The voltage $V_0$ in the network shown is AP EAPCET 2024 - 19th May Evening Shift Physics - Current Electricity Question 10 English
AP EAPCET 2024 - 19th May Evening Shift
11
In a potentiometer, the area of cross-section of the wire is $4 \mathrm{~cm}^2$. The current flowing in the circuit is 1 A and the potential gradient is $7.5 \mathrm{Vm}^{-1}$. Then, the resistivity of the potentiometer wire is
AP EAPCET 2024 - 18th May Morning Shift
12
Drift speed $v$ varies with the intensity of electric field $E$ as per the relation.
AP EAPCET 2024 - 18th May Morning Shift
13

In the given circuit values of $$I_1, I_2, I_3$$ are respectively

AP EAPCET 2022 - 5th July Morning Shift Physics - Current Electricity Question 13 English

AP EAPCET 2022 - 5th July Morning Shift
14

The resistance of wire at $$0^{\circ} \mathrm{C}$$ is $$20 \Omega$$. If the temperature coefficient of the resistance is $$5 \times 10^{-3}{ }^{\circ} \mathrm{C}^{-1}$$. The temperature at which the resistance will be double of that at $$0^{\circ} \mathrm{C}$$ is

AP EAPCET 2022 - 5th July Morning Shift
15

The electrons take $$40 \times 10^3$$ s to dirift from one end of a metal wire of length 2 m to its other end. The area of cross-section of the wire is $$4 \mathrm{~mm}^2$$ and it is carrying a current of 1.6 A. The number density of free electrons in the metal wire is

AP EAPCET 2022 - 4th July Evening Shift
16

The current 'I' in the circuit shown in the figure is

AP EAPCET 2022 - 4th July Evening Shift Physics - Current Electricity Question 15 English

AP EAPCET 2022 - 4th July Evening Shift
17

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 17 English

AP EAPCET 2022 - 4th July Morning Shift
18

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

AP EAPCET 2022 - 4th July Morning Shift
19

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 19 English

AP EAPCET 2021 - 20th August Morning Shift
20

In a potentiometer of 10 wires, the balance point is obtained on the 6th wire. To shift the balance point to 8th wire, we should

AP EAPCET 2021 - 19th August Evening Shift
21

The length of germanium rod is $$0.925 \mathrm{~cm}$$ and its area of cross-section is $$1 \mathrm{~mm}^2$$. If for germanium $$n_i=2.5 \times 10^{19} \mathrm{~m}^{-3}, \propto_n=0.19 \mathrm{~m}^2 / \mathrm{V}-\mathrm{s}, \propto_e=0.39 \mathrm{~m}^2 / \mathrm{V}$$-s, then the resistance of the rod is

AP EAPCET 2021 - 19th August Evening Shift
22

A cell of emf 1.8 V gives a current of 17 A when directly connected to an ammeter of resistance 0.06 $$\Omega$$. Internal resistance of the cell is

AP EAPCET 2021 - 19th August Morning Shift
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