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

Similar questions

Two electric bulbs rated  watt V volts and   watt V volts are connected in parallel and V volts are applied to it. The total power will be    

(a)  watt

(b)  watt

(c)  

(d)

Check the incorrect statement: When a magnet is moved into a coil the strength of the current depends on:
Under what condition will the strength of current in a wire of resistance R be the same for connection is series and in parallel of n identical cells each of the internal resistance r?
As compared to 12C atom, 14C atom has:
Radiation pressure on any surface:

The period of oscillation of a vibration magnetometer depends on which of the following factors

(a) I and M only

(b) M and H only

(c) I and H only

(d) I, M and H only

A radioactive substance has a half-life of 1 year. The fraction of this material, that would remain after 5 years will be

(a)  

(b)  

(c)   

(d)  

Electric flux per unit solid angle is defined as:

A magnet is suspended in the magnetic meridian with an untwisted wire. The upper end of wire is rotated through 180o to deflect the magnet by 30o from magnetic meridian. When this magnet is replaced by another magnet, the upper end of wire is rotated through 270o to deflect the magnet 30o from magnetic meridian. The ratio of magnetic moments of magnets is

(a) 1 : 5

(b) 1 : 8

(c) 5 : 8

(d) 8 : 5

The resistance of 1 A ammeter is 0.018 Ω . To convert it into 10 A ammeter, the shunt resistance required will be

(a) 0.18 Ω

(b) 0.0018 Ω

(c) 0.002 Ω

(d) 0.12 Ω