Current Electricity questions
395 published questions with worked solutions.
- A galvanometer of resistance 90 is shunted by a resistance of 10 . What fraction of main current passes through the shunt?
- The resistance of 6 is connected in parallel to galvanometer of resistance 294 . The fraction of total current passing through...
- In an ammeter, 4% of total current is passing through the galvanometer. If resistance of galvanometer is G. Then resistance...
- A galvanometer of resistance 10 and series resistance r of 250 is used to convert it into a voltmeter of 2 V reading. The current...
- A galvanometer of resistance g and series resistance R is used to convert it into voltmeter reading of v volt. The current...
- What would be the series resistance required to read 150 volt, if the same voltmeter previously reading upto 15 volt with its...
- The sensitivity of a M.C.G. will increase if
- If n is number of turns, B magnetic field strength A area of coil and K torsional constant of suspension wire, then sensitivity...
- The SI. unit of current sensitivity is
- A rectangular coil of M.C.G. of 100 turns of effective area 12 cm^2 hangs in a magnetic field of 1.5 10^ -2 T. If the torsional...
- When range of an ammeter is increased, its sensitivity
- If a shunt of ( 1 10 )^ th of the coil resistance is applied to a moving coil galvanometer, then its sensitivity becomes
- The sensitivity of galvanometer is 50 div/A. When shunt is used its sensitivity become 10 div/A. If the resistance of...
- A moving coil galvanometer of resistance 5 has voltage sensitivity 2 div per mV. Its current sensitivity in div per mA is
- The current that must flow through the coil of galvanometer so as to produce a deflection of one division on its scale is called:
- Which of the following instrument is more sensitive
- In which of the following instrument, accuracy can be increased with loss in sensitivity?
- The deflection produced per unit current is
- A galvanometer is said to be sensitive, if it gives a
- The current sensitivity of a galvanometer is x div/mA and voltage sensitivity is y div/V. The resistance of galvanometer is G....
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