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प्रश्न
Write two factors by which current sensitivity of a potentiometer can be increased.
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उत्तर
The smallest potential difference that can be measured by potentiometer is called sensitivity of potentiometer. It can be increased by
(i) increasing the length of the wire
(ii) decreasing the current in the wire using a rheostat
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संबंधित प्रश्न
State the underlying principle of a potentiometer ?
How is potential gradient measured? Explain.
The potentiometer is more sensitive, when ______.
Sensitivity of a given potentiometer can be decreased by ______.
In the potentiometer experiment, cells of e.m.f. E1 and E2 are connected in series (E1 > E2). the balancing length is 64 cm of the wire. If the polarity of E2 is reversed, the balancing length becomes 32 cm. The ratio `E_1/E_2` is ______
In the experiment of potentiometer, at balance point, there is no current in the ______.
AB is a potentiometer wire (Figure). If the value of R is increased, in which direction will the balance point J shift?
For the circuit shown, with R1 = 1.0 Ω, R2 = 2.0 Ω, E1 = 2 V, and E2 = E3 = 4 V, the potential difference between the points 'a' and 'b' is approximately (in V) ______.
Two identical thin metal plates has charge q1 and q2 respectively such that q1 > q2. The plates were brought close to each other to form a parallel plate capacitor of capacitance C. The potential difference between them is ______.
A cell of internal resistance r is connected across an external resistance nr. Then the ratio of the terminal voltage to the emf of the cell is ______.
