Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Calculating unknown resistances
The current through the galvanometer (G) - a very sensitive ammeter, is reduced to zero by adjusting R4. The bridge is then said to be balanced. When the bridge is balanced, the voltage at A is equal to the voltage at B and no current flows between A and B.
Hence VR1 = VR2
therefore I1 ´ R1 = I2 ´ R2 ------------- (1) (by Ohm's law)
Also VR3 = VR4
therefore I1 ´ R3 = I2 ´ R4 ------------- (2)
Dividing (1) by (2)
Therefore the unknown resistor R3 = (all known values)
In calculations it is possible for any of the four resistors to be unknown. However, provided that the bridge is balanced, the theory remains the same and all that is required is to transpose the equation to find the unknown
EXPLAIN ROADS SAFETY MEASURES USING THE LAW OF CONSERVATION OF MOMENTUM
Weiss constant: A characteristic constant based on the material, utilized in calculating the susceptibility of paramagnetic materials.
different questions and their answers about elasticity
The Centralia power plant emits SO 2 at the rate of 150 g/s. It has an effective stack height of 50 m. Surface winds at 10 m are steady at 2.5 m/s and it is a fall afternoon. a
Question: A long straight portion of wire carries an increasing current due northward. Due east of as well as very near the straight wire at the same height as that of the stra
Uses of radio isotopes: Used in i)Medicine ii) Industry iii) Agriculture iv) Meteorology and v) Radio active dating.
A polarizer (Polarization) consists of long-chain polymers aligned in a preferred orientation. How does that orientation evaluate with the direction of polarization of the polarize
1.what is zener diode? 2.structure of zener diode? 3.operation of zener diode?
how many pumps does the heart pumps
Avogadro constant; L; NA (Count A. Avogadro; 1811) The number of items in a sample substance is equivalent to the number of atoms or molecules in a sample of ideal gas that is
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd