Download App

Magnetic Effect of Current — Physics STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 SciencePhysicsMagnetic Effect of Current1 Mark
Question

An ionized gas contains both positive and negative ions. If it is subjected simultaneously to an electric field along the +x direction and a magnetic field along the +z direction, then

(a) Positive ions deflect towards +y direction and negative ions towards –y direction

(b) All ions deflect towards +y direction

(c) All ions deflect towards –y direction

(d) Positive ions deflect towards –y direction and negative ions towards +y direction

✓

Answer

(c) All ions deflect towards –y direction

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 [1M]" from Magnetic Effect of Current→Magnetic Effect of Current — all question types→Physics STD 12 Science question papers→Bihar Board STD 12 Science question papers→Bihar Board question paper generator→

Similar questions

Two particles X and Y having equal charges, after being accelerated through the same potential difference, enter a region of uniform magnetic field and describe circular paths of radii R1 and R2 respectively. The ratio of masses of X to that of Y is:
→

In a semiconductor, the concentration of electrons is 8  and that of the holes is 5 The semiconductor  is

(a) P-type

(b) N-type

(c) Intrinsic

(d) PNP-type
→

10 wires (same length, same area, same material) are connected in parallel and each has 1 Ω resistance, then the equivalent resistance will be

(a) 10 Ω  

(b) 1 W

(c) 0.1 W 

(d) 0.001 W
→
The pressure of an ideal gas is written as $\text{p}=\frac{2\text{E}}{3\text{v}}.$ Here E refers to:
  1. Translational kinetic energy.
  2. Rotational kinetic energy.
  3. Vibrational kinetic energy.
  4. Total kinetic energy.
→

The momentum of a photon of energy hv will be

(a) hv

(b) hv/c

(c) hvc     

(d) h/v

→

The ionisation energy of 10 times ionised sodium atom is

(a) 13.6 eV

(b) 13.6 × 11 eV

(c)  

(d) 13.6 × (11)2 eV
→
The final image is formed in a compound microscope will be :
→
A wire of fixed length is wound on a solenoid of length l and radius r. Its self-inductance is found to be L. Now, if the same wire is wound on a solenoid of length $\frac{1}{2}$ and radius $\frac{\text{r}}{2},$ then the self-inductance will be
→
S.I. unit of power of a lens is :
→

Which of the following statement is correct

(a) Both Peltier and Joule effects are reversible

(b) Both Peltier and Joule effects are irreversible

(c) Joule effect is reversible, whereas Peltier effect is irreversible

(d) Joule effect is irreversible, whereas Peltier effect is reversible
→