>
Exams
>
Physics
>
Current Density
>
an infinite line charge produces an electric field
Question:
An infinite line charge produces an electric field of 9 × 10
6
N/C at a distance of 20 cm. The linear charge density will be :
CUET (UG) - 2023
CUET (UG)
Updated On:
Mar 27, 2025
10
-3
C/m
10
-4
C/m
10
-2
C/m
10
-5
C/m
Hide Solution
Verified By Collegedunia
The Correct Option is
B
Solution and Explanation
The correct option is (B):
10
-4
C/m
Download Solution in PDF
Was this answer helpful?
0
0
Top Questions on Current Density
A current flows through a cylindrical conductor of radius \( R \). The current density at a point in the conductor is \( j = \alpha r \) (along its axis), where \( \alpha \) is a constant and \( r \) is the distance from the axis of the conductor. The current flowing through the portion of the conductor from \( r = 0 \) to \( r = \frac{R}{2} \) is proportional to:
CBSE CLASS XII - 2025
Physics
Current Density
View Solution
The unit of current density is
Bihar Board XII - 2025
Physics
Current Density
View Solution
S.I. unit of current density is -
MPBSE Class XII Board - 2023
Physics
Current Density
View Solution
A spherical conducting shell of inner radius r₁ and outer radius r₂ has a charge Q. A charge q is placed at the centre of the shell. The surface charge density on outer surface of the shell is:
CUET (UG) - 2023
Physics
Current Density
View Solution
Match List I with List II
LIST I
LIST II
A
.
Conductance
I
.
[ML
3
T
-3
A
-2
]
B
.
Current density
II
.
[M
-1
L
-3
T
3
A
2
]
C
.
Specific resistance
III
.
[M
0
L
-2
T
0
A¹]
D
.
Electrical conductivities
IV
.
[M
-1
L
-2
T
3
A
2
]
Choose the correct answer from the options given below:
CUET (UG) - 2023
Physics
Current Density
View Solution
View More Questions
Questions Asked in CUET exam
A and B can complete a task in the ratio 3:2. If together they complete the task in 20 days, how long will A alone take?
CUET (UG) - 2025
Time and Work
View Solution
What is the angle between the hour and minute hand at 3:30?
CUET (UG) - 2025
Clock and Calendar
View Solution
If \( 3 \times 4 = 25 \), \( 5 \times 2 = 27 \), \( 6 \times 3 = 39 \), then what is \( 7 \times 5 = ? \)
CUET (UG) - 2025
Logical Reasoning
View Solution
A projectile is fired with an initial velocity \( u \) at an angle \( \theta \) to the horizontal. The time of flight is \( T \). What is the maximum height \( H \) reached by the projectile?
CUET (UG) - 2025
Projectile Motion
View Solution
What literary device is used in the line: "The silence was so loud, it echoed in her chest"?
CUET (UG) - 2025
Figure of speech/Literary Devices
View Solution
View More Questions