1
WB JEE 2023
MCQ (Single Correct Answer)
+1
-0.25

WB JEE 2023 Physics - Current Electricity Question 2 English

In an experiment on a circuit as shown in the figure, the voltmeter shows 8 V reading. The resistance of the voltmeter is,

A
20 $$\Omega$$
B
320 $$\Omega$$
C
160 $$\Omega$$
D
1.44 k $$\Omega$$
2
WB JEE 2023
MCQ (Single Correct Answer)
+2
-0.5

An amount of charge Q passes through a coil of resistance R. If the current in the coil decreases to zero at a uniform rate during time T, then the amount of heat generated in the coil will be,

A
$$\frac{4 Q^{2} \mathrm{R}}{3 \mathrm{~T}}$$
B
$$\frac{2 \mathrm{QR}}{3 \mathrm{~T}}$$
C
$$\frac{\mathrm{Q}^{2} \mathrm{~T}}{4 \mathrm{R}}$$
D
$$\mathrm{Q}^{2} \mathrm{RT}$$
3
WB JEE 2022
MCQ (Single Correct Answer)
+1
-0.25

WB JEE 2022 Physics - Current Electricity Question 8 English

A battery of emf E and internal resistance r is connected with an external resistance R as shown in the figure. The battery will act as a constant voltage source if

A
r << R
B
r >> R
C
r = R
D
It will never act as a constant voltage source.
4
WB JEE 2021
MCQ (Single Correct Answer)
+1
-0.25
WB JEE 2021 Physics - Current Electricity Question 9 English
The carbon resistor with colour code is shown in the figure. There is no fourth band in the resistor. The value of the resistance is
A
24 M$$\Omega$$ $$\pm$$ 20%
B
14 k$$\Omega$$ $$\pm$$ 5%
C
24 k$$\Omega$$ $$\pm$$ 20%
D
34 k$$\Omega$$ $$\pm$$ 10%
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