MCQ
Gauss's law in dielectric medium:
- ✓$\oint \in_1 E d s=\frac{q}{\in_0}$
- B$\oint E d s=\frac{q}{\in_0}$
- C$\oint \frac{E d s}{\in_1}=\frac{q}{\in_0}$
- D$\oint E d s=0$
✓
Answer
Correct option: A.
$\oint \in_1 E d s=\frac{q}{\in_0}$
(a)$\oint \in_1 E d s=\frac{q}{\in_0}$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
A charged particle moves in a gravity-free space without change in velocity. Which of the following is are possible:
→- $\text{E}=0,\ \text{B}=0$
- $\text{E}=0,\ \text{B}\not=0$
- $\text{E}\not=0,\ \text{B}=0$
- $\text{E}\not=0,\ \text{B}\not=0$
Consider a mixture of oxygen and hydrogen kept at room temperature. AB compared to a hydrogen molecule an oxygen molecule hits the wall:
- With greater average speed.
- With smaller average speed.
- With greater average kinetic energy.
- With smaller average kinetic energy.
In series L - C - R resonant circuit, to increase the resonant frequency:
The current flowing through a coil of resistance 900 ohms is to be reduced by 90%. What value of shunt should be connected across the coil
|
(a) 90 Ω |
(b) 100 Ω |
(c) 9 Ω |
(d) 10 Ω |
In the above question, potential difference across the 40Ω resistance will be
|
(a) Zero |
(b) 80 V |
(c) 40 V |
(d) 120 V |
In any fission process the ratio 
is
|
(a) Less than 1 |
|
(b) Greater than 1 |
|
(c) Equal to 1 |
|
(d) Depends on the mass of the parent nucleus |
A condenser has a capacity 2μF and is charged to a voltage of 50 V. The energy stored is
|
(a) 25 × 105 Joule |
(b) 25 Joule |
(c) 25 × 10 erg |
(d) 25 × 103 erg |
A pendulum clock that keeps correct time on the earth is taken to the moon. It will run:
→- At correct rate.
- 6 times faster.
-
$\sqrt{6}$ times faster.
-
$\sqrt{6}$ times slower.
The characteristic impedance of a coaxial cable is of the order of
|
(a) 50 W |
(b) 200 W |
(c) 270 W |
(d) None of these |
The charge on any one of the 2 μF capacitors and 1 μF capacitor will be given respectively (in μC ) as
|
(a) 1, 2 |
(b) 2, 1 |
(c) 1, 1 |
(d) 2, 2 |