a galvanometer of resistance 10 has 25mA. how will you convert it into a voltmeter of range 25 volt.
Answers
Answered by
0
Answer:
External resistance need to be connected to the millimeter to convert it to a voltmeter. For your query, the external resistance (R) in series with internal resistance of 10 Ohm must limit the current through the meter to 25 mA when connected across 25 V. So, the equation is 25/(R+10) = 25/1000 or R = 990 ohm. So by connecting an external resistance of 990 Ohm, it can be done.
Explanation:
Bhai please brainlist ka button daba do.
Answered by
1
the external resistance (R) in series with internal resistance of 10 Ohm must limit the current through the meter to 25 mA when connected across 25 V. So, the equation is 25/(R+10) = 25/1000 or R = 990 ohm. So by connecting an external resistance of 990 Ohm
Similar questions