Figure shows a simple potentiometer circuit for measuring a small emf produced by a thermocouple... VIDEO
Figure shows a simple potentiometer circuit for measuring a small emf produced by a thermocouple.
The meter wire \( P Q \) has a resistance of \( 5 \Omega \), and the driver cell has an emf of \( 2.00 \mathrm{~V} \). If a balance point is obtained \( 0.600 \mathrm{~m} \) along \( P Q \) when measuring an emf of \( 6.00 \mathrm{mV} \), what is the value of resistance \( R \) ?
(1) \( 95 \Omega \)
(2) \( 995 \Omega \)
(3) \( 195 \Omega \)
(4) \( 1995 \Omega \)
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