AIEEE, IIT-JEE Physics - Current Electricity - 2 Online Test


10(
20(
30(
40(

C
2 C
3 C
4 C

Q, 2Q
A straight wire of length l and electric dipole moment p is bent to form a semicircle. The new dipole moment would be
p/2
p/2?
2p
The electric potential V is given as a function of distance x (metre) by V = (5x2 + 10x – 4) volt. Value of electric field at x = 1 m is
–23 V/m
11 V/m
6 V/m
–20 V/m
A large insulated sphere of radius ‘r’ charged with ‘Q’ units of electricity is placed in contact with a small insulated sphere of radius r' and is then separated. The charge on smaller sphere will now be
Q (r + r)
Q (r + r')
An electron of mass ‘m’ and charge ‘e’ is accelerated from rest through a potential difference ‘V’ in vacuum. Its final speed will be
eV / 2m
eV/m
Two conducting spheres of radii r1 and r2 are equally charged. The ratio of their potential is
r1/r2
r2/r1
Two conducting spheres of radii r1 and r2 are at the same potential. The ratio of the their charges is
r1/r2
r2/r1
Two point charges exert on each other a force F when they are placed r distance apart in air. When they are placed R distance apart in a medium of dielectric constant K, they exert the same force. The distance R equals:
r K
Two point charges +3?C and +8?C repel each other with a force of 40 N. If a charge of –5?C is added to each of them, then the force between them will become
–10 N
+10 N
+20 N
–20 N
An insulated sphere of radius R has charge density ?. The electric field at a distance r from the centre of the sphere (r < R)
Given that q1 + q2 = q. For what ratio q1/q will the force between q1 and q2 be maximum?
0.25
0.5
1
2
Three charges each of +1?C are placed at the corners of an equilateral triangle. If the force between any two charges be F, then the net force on either charge will be
2 F
3 F
The amount of charge Q passed in time t through a cross-section of a wire is Q = 5t2 + 3t + 1. The value of current at time t = 5 s is
9 A
49 A
53 A
none of these
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AIEEE, IIT-JEE Physics - Current Electricity - 2

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IIT JEE  AIEEE  AIPMT  AFMC  CBSE

Discussion

Sarojkumar Dalai

More physics questions for online test. Click Here
http://www.freeonlinetest.in/question-and-answer/general-knowledge/physics

1014 days 18 hours 27 minutes ago

Umam

dan ketertahanan terhadap pengaruh luar (korosi, aus, bahan kimia, suhu tinggi dan sebagainya).
Besi teknis selalu tercampur dengan unsure-unsur lain misalnya karbon (C), silicon (Si), mangan (Mn), Fosfor (P), dan belerang http://goo.gl/TLJKhQ http://bit.ly/2bgLGS7See more

2124 days 16 hours 45 minutes ago

Umam

natrium, dan barium.
Logam mulia : http://goo.gl/zhFEpe http://bit.ly/2bF0zgB
emas, perak, dan platina.
Logam tahan api : wolfram, molibden, titanium, dan zirkonium.
Dalam penggunaan serta pemakaiannya, logam pada umumnya tidak merupakan

2124 days 16 hours 48 minutes ago

Niranjan.S

how to crack 15 th ques?

2341 days 18 hours 43 minutes ago

Lohith

IT is easy as compared to iit

2415 days 18 hours 5 minutes ago

Shivam Pandey

how to solve mltiply question in short cut

2447 days 11 hours 37 minutes ago

Kautilya Bhanwarayat

its easy. And actually it was nothing as compared to iit jee level.

2778 days 6 hours 30 minutes ago

Himaja

nice test .......but I want topic wise mock tests in maths physics and chemistry leveling IIT JEE standards

2792 days 14 hours 40 minutes ago

Rounak Pal

nice test... i tried my best

2822 days 7 hours ago

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