chapter two voltameter

Question 1

diff voltameter

Answer 1

it is the divise used to measure the potential difference across two points direct

Question 2

how can to convert the galvonometer to voltameter

Answer 2

1. shfited zero postion to the left on the scale
2. A large potential multiplier resistor is connected in series with the coil of the galvanometer

Question 3

diif tthee multiplier

Answer 3

it is a large resistior is connectted in series with the galvonnmmetter coil tto bee volltameter

Question 4

the voltametteer is connected in parallel in the electric circuit

Answer 4

to be sure that thee potentiial diffeerence beetween the two pooints iss the ssame like that between the terminls of the voltameter

Question 5

a large multiiplierr resistior is connecteed in series with the galvanometer coil to be voltameter

Answer 5

1. it makes thee volttmeter measure higher potential ddifferance
2. it makes the voltmeeter as whholee has veery high resistance to draw negligaple current when it is connected in parallel accross two poiints

Question 6

the voltmeter should have large resitance

Answer 6

to be sure it will draw negligabllee current whenn it is coonnectedd in parallel acrosss two poointts so it will not affect the intensity of the current passsees through the circuit

Question 7

prroff the relation of the multtibler resistoer

Answer 7

draw in page 96

V = V_g + V_m

V = V_g + I_g x R_m

R_m = V – V_g \ I_g

Question 8

by adding multiplier resiatance what will happen to the sensativity of the voltmeter as it will measure ….. current

Answer 8

the sensativty of the voltmmeter decreases as it will meaassure higher resistance

Question 9

by increeasing the multiplier resiatance what will happen to the sensativity of the voltmeter as it will measure ….. current

Answer 9

the sensativty of the voltmmeter decreases as it will meaassure higher resistance

Question 10

the maximum potential deifference can be measured by the voltmeter depend on

Answer 10

the value of the multiplierr