1
JEE Main 2022 (Online) 25th July Evening Shift
MCQ (Single Correct Answer)
+4
-1

A current of 15 mA flows in the circuit as shown in figure. The value of potential difference between the points A and B will be:

A
50 V
B
75 V
C
150 V
D
275 V
2
JEE Main 2022 (Online) 25th July Morning Shift
MCQ (Single Correct Answer)
+4
-1

Which of the following physical quantities have the same dimensions?

A
Electric displacement $$(\overrightarrow{\mathrm{D}})$$ and surface charge density
B
Displacement current and electric field
C
Current density and surface charge density
D
Electric potential and energy
3
JEE Main 2022 (Online) 30th June Morning Shift
MCQ (Single Correct Answer)
+4
-1

An electric cable of copper has just one wire of radius 9 mm. Its resistance is 14 $$\Omega$$. If this single copper wire of the cable is replaced by seven identical well insulated copper wires each of radius 3 mm connected in parallel, then the new resistance of the combination will be :

A
9 $$\Omega$$
B
18 $$\Omega$$
C
28 $$\Omega$$
D
126 $$\Omega$$
4
JEE Main 2022 (Online) 29th June Evening Shift
MCQ (Single Correct Answer)
+4
-1

The combination of two identical cells, whether connected in series or parallel combination provides the same current through an external resistance of 2$$\Omega$$. The value of internal resistance of each cell is

A
2$$\Omega$$
B
4$$\Omega$$
C
6$$\Omega$$
D
8$$\Omega$$
JEE Main Subjects
Physics
Mechanics
Electricity
Optics
Modern Physics
Chemistry
Physical Chemistry
Inorganic Chemistry
Organic Chemistry
Mathematics
Algebra
Trigonometry
Coordinate Geometry
Calculus
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