A galvanometer has full scale deflection current of 500 micro-Ampere, and resistance of 100 Ohm. Shunt with what resistance has to be combined with the galvanometer in order to transform it to an ammeter able to measure current of 10 Ampere full scale?
Rs = (Rg*Ig) / (I - Ig) = (100 * 500 * 10^-6) / (10 - 500*10^-6) = 0.005 ohm
Ig = 500*10^-6 A
Rg = resistance of galvanometer = 100 ohm
I = 10 A
Student uses the circuit shown in task [6] in the text to find the resistance of a voltmeter, and obtains that at 2 Volt reading on the voltmeter, the galvanometer reads current of 400 micro-Ampere. What is the voltmeter resistance?
R = (V/Ig) - G = (2/400*10^-6) - 400*10^-6 = 5000 ohm
V = 2 V
Ig = 400 * 10^-6 A
Answers (1)
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “A galvanometer has full scale deflection current of 500 micro-Ampere, and resistance of 100 Ohm. Shunt with what resistance has to be ...” in 📗 Physics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers
You Might be Interested in
What is needed to set a body in motion
Answers (1)
Which describes Ernest Rutherford's experiment? 1. Positive particles are fired at gold foil. Most bounce back, but some pass through. 2. Negative particles are fired at gold foil. Most bounce back, but some pass through. 3.
Answers (2)
The drawing shows a person looking at a building on top of which an antenna is mounted. The horizontal distance between the person's eyes and the building is 95.2 m.
Answers (1)
Which is not an NOT the measure of the frequency of a wave? a. 0.10 s per wave b. 5 hertz c. 2 cycles per second d. 4 waves per second
Answers (1)
Tex, an 85.0 kilogram rodeo bull rider is thrown from the bull after a short ride. The 520. kilogram bull chases after Tex at 13.0 m/s. While running away at 3.00 m/s, Tex jumps onto the back of the bull to avoid being trampled.
Answers (1)
New Questions in Physics
Explain how atoms are aligned in a magnet in terms of the North and South poles.
Answers (1)
Which of the following has the largest gravitational potential energy A. a 10kg dog running down the street at 30mph B. a tightrope walker slowly crossing niagara falls C. a 0.02kg bullet moving down the barrel at 800mph D.
Answers (1)
Why does the speed of an object change when a force acts on it?
Answers (1)
What are factors that would change the position of the wave lengths measured? (There are more than one answer.) a) size of the tube b) tuning fork frequency c) distance between the tuning fork and tube d) room temperature e) area of the tube
Answers (1)
This particle is found in the nucleus and adds mass to the nucleus, but changing its number does not change what the element is. This particle is the A. proton. B. photon. C. neutron. D. electron.
Answers (1)