physics

Agalvanometer of resistance 25 ohmes shows full scale deflection for current​ of 10mA, to convert it into 100 V range voltmeter , the required series resistance is

  1. 👍 0
  2. 👎 0
  3. 👁 142
  1. Vf = If*Rg = 10*10^-3 * 25 = 0.25 Volts.

    Rs = (10-Vf)/If.

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. History

    Why is knowing the scale of a of a map so helpful? A.The scale helps you determine how far places are from one another. B.The scale tells you the amount of precipitation place receives. C.The scale shows the types of land forms a

  2. Physics

    A loop circuit has a resistance of R1 and a current of 2.2 A. The current is reduced to 1.7 A when an additional 3 Ω resistor is added in series with R1. What is the value of R1? Assume the internal resistance of the source of

  3. Physics

    A moving coil instrument has a resistance of 75 ohms and gives full scale deflection of 100 scale divisions for a current of 1mA. This instrument is connected in parallel with shunt resistance 25 ohms.The combination is then in

  4. science

    A galvanometer of resistance 100  gives full scale deflection at 10 mA current. What should be the value of shunt so that it can measure a current of 100 mA?

  1. Solar Energy Help ASAP

    The current density of an ideal p-n junction under illumination can be described by: J(V)=Jph−J0(eqVkT−1) where Jph is the photo-current density, J0 the saturation-current density, q the elementary charge, V the voltage, k the

  2. PHYSICS

    A GALVANOMETER WITH COIL RESISTANCE 12.0OHMS SHOWS FULL SCALE DEFLECTION FOR A CURRENT OF 2.5MA HOW WOULD YOU CONVERT IT INTO A VOLTMETER OF RANGE 0 TO 10VOLTS

  3. Sciencee

    Two electrical circuits have the same 15-volt batteries. Circuit A has 2 ohms of resistance, and circuit B has 6 ohms of resistance. Which of the following statements is correct? (1 point) • Circuit B has the same amount of

  4. Calculus

    The voltage,V, in an electrical unit is related to the current,I, and the resistance,R, by the equation V=IR. The current is decreasing at -4amps/sec as the resistance increases at 20ohms/sec. How fast is the voltage changing when

  1. Physics

    A moving-coil instrument gives a full-scale deflection when the current is 40mA and its resistance is 25 Ω. Calculate the value of shunt to be connected in parallel with the metre to enable it to be used as an ammeter for

  2. Physics

    When a moving coil galvanometer has a resistance of 20 ohms and gives full scale deflection of 1.5mA.calculate the potential difference across its terminals when the current is flowing

  3. physics

    A galvanometer of resistance 50 ohm which gives a full deflection for 1mA is to be adapted to measure currents up to 5A. Calculate the resistance of the resistor required

  4. Physics

    Which of the following statements about Ohm’s Law is true? A. Keeping the same voltage and decreasing resistance decreases the current. B. To increase the current, decrease the resistance. C. Ohm’s law relates power, current

You can view more similar questions or ask a new question.