Download App

Current Electricity — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsCurrent Electricity1 Mark
MCQ
Which of the following statements is false?
  • A
    A rheostat can be used as a potential divider.
  • B
    Kirchhoff's second law represents energy conservation.
  • C
    Wheatstone bridge is the most sensitive when all the four resistances are of the same order of magnitude.
  • D
    In a balanced wheatstone bridge if the cell and the galvanometer are exchanged, the null point is disturbed.
✓

Answer

  1. In a balanced wheatstone bridge if the cell and the galvanometer are exchanged, the null point is disturbed.

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

An atomic power nuclear reactor can deliver 300 MW. The energy released due to fission of each nucleus of uranium atom   is 170 MeV. The number of uranium atoms fissioned per hour will be

(a) 30  

 (b)  4  

(c) 10   

 (d) 5  
→
Which among the following materials display higher magnetic susceptibility?
→
Which conservation law is obeyed in Einstein's photoelectric equation?
→
A charge "Q" and "2Q" are 0.05 meters apart and isolated. The ratio of the electrostatic force on the charge Q to the force on charge 2Q is:
→
The pressure p and volume V of an ideal gas both increase in a process.
  1. Such a process is not possible.
  2. The work done by the system is positive.
  3. The temperature of the system must increase.
  4. Heat supplied to the gas is equal to the change in internal energy.
→

When objects at different distances are seen by the eye, which of the following remains constant

(a) The focal length of the eye lens

(b) The object distance from the eye lens

(c) The radii of curvature of the eye lens

(d) The image distance from the eye lens
→

Which of the following is true for photon

(a) E =     

(b) E =  

(c) p =                                             

(d) E =  
→
If de-Broglie wavelength of a dust particle of mass $1.0 \times 10^{-9} kg$ is $3 \times 10^{-25} m$ then the speed of the particle is ___________ . \[\left(h=6.625 \times 10^{-34} Js\right)\]
→

Two circuits have mutual inductance of 0.1 H. What average e.m.f. is induced in one circuit when the current in the other circuit changes from 0 to 20 A in 0.02 s

(a) 240 V                                            

(b) 230 V

(c) 100 V

(d) 300 V
→
Nuclear fusion reactions cannot be harnessed for productive applications because:
→