Login
Remember
Register
Home
All Activity
Q&A
Questions
Hot!
Unanswered
Tags
Categories
Users
Ask a Question
Ask a Question
Long wire of the potentiometer gives lower value of................ which increases sensitivity of
0
votes
asked
Mar 20, 2022
in
12th Physics
by
varun
(
6.7k
points)
Long wire of the potentiometer gives lower value of................ which increases sensitivity of potentiometer.
Options:
(a) resistance (b) potential gradient (c) electric potential (d) heat dissipation
marks1
chapter3
#mcq
Please
log in
or
register
to answer this question.
0
Answers
Categories
All categories
Maths
(8.6k)
Science
(14)
Physics
(3.4k)
11th Physics
(1.5k)
12th Physics
(1.9k)
Related questions
The figure below shows a `2.0 V` potentiometer used for the determination of internal resistance of a `2.5 V` cell. The balance point of the cell in the open circuit is 75 cm. When a resistor of `10 Omega` is used in the external circuit of the cell, the balance point shifts to 65 cm length of potentiometer wire. The internal resistance of the cell
A potentiometer circuit is set up as shown. The potential gradient across the potentiometer wire, is `k` volt/cm and the ammeter, present in the circuit, reads `1.0` A when two way key is switched off. The balance points, when the key between the terminals (i) 1 and 2 (ii) 1 and 3, is plugged in, are found to be at lengths `l_1 cm and l_2 cm`, respectively. The magnitudes of the resistors `R and X` in ohm, are then, respectively equal
Assertion: If we increase the current sensitivity of a galvanometer by increasing number of turns, its voltage sensitivity also increases. Reason: Resistance of a wire also increases with
A metal wire is subjected to a constant potential difference. When the temperature of the metal wire increases, then the drift velocity of the electron in
Assertion: The drift velocity of electrons in a metallic wire decreases, when temperature of the wire increases. Reason: On increasing temperature, conductivity of metallic wire