A potentiometer circuit shown in the figure is set up to measure emf of cell E . As the point P moves from X to Y , the galvanometer G shows deflection always in one direction, but the deflection decreases continuously until Y is reached. The balance point between X and Y may be obtained by

Question

A potentiometer circuit shown in the figure is set up to measure emf of cell E . As the point P moves from X to Y , the galvanometer G shows deflection always in one direction, but the deflection decreases continuously until Y is reached. The balance point between X and Y may be obtained by, decreasing the resistance R and decreasing V, decreasing the resistance R and increasing V, increasing the resistance R and increasing V, increasing the resistance R and decreasing V .

MARKS App · Accepted Answer

Decreasing R increases current in XY and there by increases the potential drop across XP and the balance point may be obtained. The current may be increased also by increasing V .

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