Consider a galvanometer with an internal resistance of 60 O. If the galvanometer is being used as an ammeter (with no additional resistance) it deflects full scale when it carries a current of 0.5 mA. You want to use the same galvanometer as a voltmeter by connecting it through a series resistor to voltage source. A 1.0 V source produces full scale deflection of the meter. What is the value of the series resistor?
Ohm's law
Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.
Path of Least Resistance
In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.
Consider a galvanometer with an internal resistance of 60 O. If the galvanometer is being used as an ammeter (with no additional resistance) it deflects full scale when it carries a current of 0.5 mA. You want to use the same galvanometer as a voltmeter by connecting it through a series resistor to voltage source. A 1.0 V source produces full scale deflection of the meter. What is the value of the series resistor?
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