MCQ
To convert a moving coil galvanometer into voltmeter
  • A
    a low resistor is needed to join in parallel
  • B
    a low resistor is needed to join in series
  • C
    a high resistor is needed to join in parallel
  • a high resistor is needed to join in series

Answer

Correct option: D.
a high resistor is needed to join in series
(d)a high resistor is needed to join in series

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

An electric dipole is situated in an electric field of uniform intensity E whose dipole moment is p and moment of inertia is I. If the dipole is displaced slightly from the equilibrium position, then the angular frequency of its oscillations is

(a)

(b)

(c)

(d)

Earth's magnetic field always has a horizontal component except at or Horizontal component of earth's magnetic field remains zero at

(a) Equator

(b) Magnetic poles

(c) A latitude of 60o

(d) An altitude of 60o

A metal surface of work function 1.07 eV is irradiated with light of wavelength 332 nm. The retarding potential required to stop the escape of photo-electrons is

(a) 4.81 eV

(b) 3.74 eV

(c) 2.66 eV

(d) 1.07 eV

A frog can be levitated in a magnetic field produced by a current in a vertical solenoid placed below the frog. This is possible, because the body of the frog behaves as

At zero Kelvin a piece of germanium

(a) Becomes semiconductor

(b) Becomes good conductor

(c) Becomes bad conductor

(d) Has maximum conductivity

A 50 Hz, 20 V AC source is connected across R series circuit as shown in Figure If the voltage across R is 12V then voltage across capacitor is.
Image
The working principle of dynamo is based on :
If the magnetic field of an electromagnetic wave is given as By ​= 2 × 10-7 sin(103x + 1.5 × 1012t) tesla, the wavelength of the electromagnetic wave is.

In the following circuit a 10 m long potentiometer wire with resistance 1.2 ohm/m, a resistance R1 and an accumulator of emf 2 V are connected in series. When the emf of thermocouple is 2.4 mV then the deflection in galvanometer is zero. The current supplied by the accumulator will be

(a) 4 × 10–4 A

(b) 8 × 10–4 A

(c) 4 × 10–3 A

(d) 8 × 10–3 A

The forbidden energy band gap in conductors, semiconductors and insulators are  and   respectively. The relation among them is

(a) 

(b)  

(c) 

(d)