Answer:
Explanation:
If the potentiometer is assumed to be linear
Then one one quarter of the total resistance will be below the slider and three quarters of the resistance will be above the slider.
To get zero voltage reading, 150 must be 3/4 of the total resistance of the right leg
150 = 0.75(150 + R)
150 = 112.5 + 0.75R
37.5 = 0.75R
R = 50 Ω
