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
Physics, 22.06.2019 00:50
Part a constants huck finn walks at a speed of 0.60 m/s across his raft (that is, he walks perpendicular to the raft's motion what is huck's velocity (speed and direction) relative to the river bank? express your answer to three significant figures and include the appropriate units. relative to the shore)
Answers: 3
Physics, 23.06.2019 02:10
Which best describes the weak nuclear force? it maintains attraction between the m ecules in liquids. it attracts the nucleus of one atom to the nucleus of another atom. it pulls all matter in the universe together it keeps particles that make up protons and neutrons together
Answers: 1
Physics, 23.06.2019 02:40
When doing scientific research ,the sources used should be ?
Answers: 1
A galvanometer has full scale deflection current of 500 micro-Ampere, and resistance of 100 Ohm. Shu...
Mathematics, 22.11.2020 14:00
Mathematics, 22.11.2020 14:00
Mathematics, 22.11.2020 14:00
Mathematics, 22.11.2020 14:00
Mathematics, 22.11.2020 14:00
Chemistry, 22.11.2020 14:00
Chemistry, 22.11.2020 14:00
Mathematics, 22.11.2020 14:00
Computers and Technology, 22.11.2020 14:00
English, 22.11.2020 14:00
Mathematics, 22.11.2020 14:00
English, 22.11.2020 14:00
Chemistry, 22.11.2020 14:00
Chemistry, 22.11.2020 14:00