a pmmc ammeter has a coil resistance of 99 ohm and full scale deflection current of 0.6 milliampere with shunt resistance of 1 ohm at 0.5 fsd is -
Answer (1)
14th Dec, 2020
Hi Candidate,
Before proceeding to the Question, let me tell you something about PMMC Ammeter- Permanent Magnet Moving Coil ( PMMC ) meter which is also known as a D'Arsonval meter or galvanometer is an instrument that allows you to measure the current through a coil by observing the coil's angular deflection in a uniform magnetic field.
Now as per the Question, Coil Resistance=99 Ohm, Current Deflection=0.6 milli Ampere, Shunt Resistance=1 ohm. So, total Resistance=99+1=100 ohm. Current=0.006 Ampere. The Voltage= current*resistance= 100*.006=0.6 Volts.
Hope that this answer helps you
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