A simple potentiometer circuit is shown in figure the internal resistance of 4fV battery is negligible AC is the uniform wire of length 100 cm and resistance 2ohm what would be the length of AB for which galvanometer shows zero deflection
Answers
Answer:
A simple potentiometer circuit is shown in figure the internal resistance of 4fV battery is negligible AC is the uniform wire of length 100 cm and resistance 2ohm .
The figure is attached.
Explanation:
The voltage across AB should be 1.5 V for the no deflection.
Hence, current through the wire Ac at balanced situation
I=4/(2.4+2)=0.91 A
let the length of AB be x
2x/100×0.91=1.5
x=150/1.82
=82.5 ohm
A simple potentiometer circuit is shown in figure the internal resistance of 4fV battery is negligible AC is the uniform wire of length 100 cm and resistance 2ohm .
The figure is attached.
Explanation:
The voltage across AB should be 1.5 V for the no deflection.
Hence, current through the wire Ac at balanced situation
I=4/(2.4+2)=0.91 A
let the length of AB be x
2x/100×0.91=1.5
x=150/1.82
=82.5 ohm