Question: (a) What is the unknown emf x in a potentiometer that balances when R x is 10.0, and balances when R s , is 15.00

(a) What is the unknown emf_x in a potentiometer that balances when R_x is 10.0Ω, and balances when R_s, is 15.00Ω for a standard 3.000-V emf?

(b) The same emf_x is placed in the same potentiometer, which now balances when R_s, is 15.0Ω for a standard emf of 3.100 V. At what resistance R_x will the potentiometer balance?

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