1
AP EAPCET 2024 - 18th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
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
A
$3 \times 10^{-3} \mathbf{q}-\mathrm{m}$
B
$2 \times 10^{-6} \mathrm{Q}-\mathrm{m}$
C
$4 \times 10^{-2} \mathbf{Q}$-m
D
$5 \times 10^{-4} \Omega$-m
2
AP EAPCET 2024 - 18th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
Drift speed $v$ varies with the intensity of electric field $E$ as per the relation.
A
$v=E$
B
$v \propto \frac{1}{E}$
C
$v=E^2$
D
$v=E^{-2}$
3
AP EAPCET 2022 - 5th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

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

A
1.364 A, 6.278 A, 5.91 A
B
$$1.97 \mathrm{~A}, 3.56 \mathrm{~A}, 2.784 \mathrm{~A}$$
C
$$-0.327 \mathrm{~A}, 5.28 \mathrm{~A}, 3.197 \mathrm{~A}$$
D
$$1.523 \mathrm{~A}, 4.396 \mathrm{~A}, 1.63 \mathrm{~A}$$
4
AP EAPCET 2022 - 5th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

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

A
$$10^{\circ} \mathrm{C}$$
B
$$200^{\circ} \mathrm{C}$$
C
$$250^{\circ} \mathrm{C}$$
D
$$300^{\circ} \mathrm{C}$$
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