Home
Class 12
PHYSICS
A voltmeter consists of a 25(Omega) coil...

A voltmeter consists of a `25(Omega)` coil connected in series with a `575(Omega)`resistor. The coil takes 10mA for full scale deflection.What maximum potential difference can be measured on this voltmeter?

Text Solution

Verified by Experts

`V = `R_eff xx i`
`= 600 xx 10 xx (10^-3) = 6V ` .
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • ELECTRIC CURRENT IN CONDUCTORS

    HC VERMA|Exercise objective 2|9 Videos

  • DISPERSION AND SPECTRA

    HC VERMA|Exercise Exercises|11 Videos

  • ELECTRIC CURRENT THROUGH GASES

    HC VERMA|Exercise Exercise|23 Videos

Similar Questions

Explore conceptually related problems

An ammeter is to be constructed which can read currents up to 2.0A. If the coil has a resistance of 25(Omega) and takes 1mA for full-scale deflection, what should be the resistance of the shunt used?

A galvanometer of resistance 50 Omega is connected to a battery of 3V along with a resistance of 2950 Omega in series. A full scale deflection of 30 divisions is obtained in the galvanometer. In order to reduce this deflection to 20 divisions, the resistance in series should be:

Knowledge Check

  • The resistance of a galvanometer is 50 Omega and requires 0.5 mA for full scale deflection. To convert it into voltmeter of range 0-10 V, then the value of resistance to be connected in series is

    A
    `99.95 k Omega`
    B
    `20.05 k Omega`
    C
    `19.95 k Omega`
    D
    `10.05 k Omega`

    • Similar Questions

    Explore conceptually related problems

    An inductor of inducance 5.0 H, having a negligible resistance, is connected in series with a 100 Omega resistor and a battery of emf 2.0 V. Find the potential difference across the resistor 20 ms after the circuit is switched on.

    A 2muF capacitor is charged to a p.d. of 60V. The charging battery is disconnected and the capacitor is connected in series with a coil of inductance 10mH, so that LC oscillations occur. What is the maximum current in the coil? Assume that the circuit contains no resistance.

    A voltmeter of resistances 400(Omega) is used to measure the potential difference across the 100(Omega) resistor in the circuit shown in figure.(a) What will be the reading of the voltmeter ?(b) What was the potential difference across 100(Omega) before the voltmeter was connected ?

    A voltmeter coil has resistance 50.0(Omega) and a resistor of 1.15k(Omega) is connected in series.It can read potential differences upto 12 volts.If this same coil is used to construct an ammeter which can measure currents up to 2.0A ,What should be the resistance of the shunt used ?

    A cell of emf 1.4 V and with resistance 2 Omega is put in series with a 100 Omega resistor through anammeter. The resistance of the ammeter is (4)/(3)Omega . A voltmeter is connected across 100 Omega resistor. a. When ammeter reads 0.02A, what is the resistance of the voltmeter? b. When voltmeter reads 1.1 V, what is the error in this reading?

    a.What is the effective resistance between A and C? b. How much current enters the circuit through A c. What is the current through each resistor? d. What is the amount of current leaving the point A? e.What is the potential difference between the points A and C? f. How much emf is applied? g. What is the value of potential at B? h. What is the value of potential at D? i. How much current flows through a galvanometer if it is connected between B and D? j. If the resistor between A and D is replaced by 2 Omega , what happens to galvanometer deflection? k. Can you again reduce the deflection to zero by adjusting resistance between D and C?

    A capacitance C , a resistance R and an emf (epsilon) are connected in series at t=0.What is the maximum value of (a) the potential difference across the resistor, (b) the current in the circuit,(c )the potential difference across the capacitor, (d) the energy stored in the capacitor ,(e)the power delivered by the battery and (f) the power converted int heat.

    Home
    Profile