A 1-mA full-scale deflection current meter movement is to be used in ohmmeter circuit. The meter movement has an internal resistance, $R_m = 100\Omega$, and a 3-V battery will be used in the circuit. Mark off the meter face for reading resistance.
Added by Gregorio G.
Close
Step 1
The full-scale deflection current is 1 mA, and the internal resistance of the meter is 1002 ohms. Using Ohm's Law (V = IR), we can calculate the voltage drop across the internal resistance: V = I * R V = 0.001 A * 1002 ohms V = 1.002 V Since the battery voltage Show more…
Show all steps
Your feedback will help us improve your experience
Varsha Aggarwal and 68 other Physics 102 Electricity and Magnetism educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
"A galvanometer coil has a resistance of 12 ? and the meter shows full scale deflection for a current of 3 mA. How will you convert the meter into a voltmeter of range 0 to 18 V?"
Dinesh C.
The resistance of the galvanometer G in the circuit is 2502. The meter deflects full scale for a current of 10 mA. The meter behaves as an ammeter of three different ranges: The range is 0-10A, if the terminals O and P are taken; range is 0-1A between O and Q; range is 0-0.1A between O and R. Calculate the resistance Ri, R2, and R.
Madhur L.
1000 mA current gives a full scale deflection in a galvanometer of resistance 3 ohms. The resistance connected with the galvanometer to convert it into a voltmeter of 10 V range is
Taniya K.
Recommended Textbooks
University Physics with Modern Physics
Physics: Principles with Applications
Fundamentals of Physics
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD