An ionization chamber with parallel conducting plates as anode an… - Vidyadip

MCQ

An ionization chamber with parallel conducting plates as anode and cathode has $5 \times 10^7$ electrons and the same number of singly-charged positive ions per $\mathrm{cm}^3$. The electrons are moving at 0.4 m/s. The current density from anode to cathode is $4 \mu \mathrm{A} / \mathrm{m}^2$. The velocity of positive ions moving towards cathode is

A
0.4 m/s
B
16 m/s
C
Zero
✓
0.1 m/s

✓

Answer

Correct option: D.

0.1 m/s

(d) 0.1 m/s

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from Current Electricity→Current Electricity — all question types→Physics STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

Einstein got Nobel prize on which of the following works

A parallel plate capacitor having crosssectional area $A$ and separation $d$ has air in between the plates. Now an insulating slab of same area but thickness $d/2$ is inserted between the plates as shown in figure having dielectric constant $K (=4) .$ The ratio of new capacitance to its original capacitance will be,

A watch shows time as $3:25$ when seen through a mirror, time appeared will be

The magnetic flux linked to a circular coil of radius $R$ is :

$\phi=2 t^3+4 t^2+2 t+5 \;W b$

The magnitude of induced $emf$ in the coil at $t=5\; s$ is $..........\,V$.

3 identical bulbs are connected in series and these together dissipate a power P. If now the bulbs are connected in parallel, then the power dissipated will be

If the distance between H and Cl in HCl molecule is 1.28 A, then the value of electric dipole moment of this molecule will be (in Coulomb-meter):

The radio waves of frequency 300 MHz to 3000 MHz belong to

In a transistor in CE configuration, the ratio of power gain to voltage gain is

A dielectric slab of thickness $d$ is inserted in a parallel plate capacitor whose negative plate is at $x = 0$ and positive plate is at $x = 3d$. The slab is equidistant from the plates. The capacitor is given some charge. As one goes from $0$ to $3d$

$\alpha - $ particles of energy $400\, KeV$ are bombarded on nucleus of $_{82}Pb$. In scattering of $\alpha - $ particles, its minimum distance from nucleus will be