(a) What is the unknown emfx in a potentiometer that balances when Rx is 10.0 Ω , and balances when Rs is 15.0 Ω for a standard 3.000-V emf? (b) The same emfx is placed in the same potentiometer, which now balances when Rs is 15.0 Ω for a standard emf of 3.100 V. At what resistance Rx will the potentiometer balance?
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.
(a) What is the unknown emfx in a potentiometer that balances when Rx is 10.0 Ω , and balances when Rs is 15.0 Ω for a standard 3.000-V emf?
(b) The same emfx is placed in the same potentiometer, which now balances when Rs is 15.0 Ω for a standard emf of 3.100 V. At what resistance Rx will the potentiometer balance?
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