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
What is a starry sky? Probably one of the most beautiful lighting effects which can be created that can be very simple or rather sophisticated. In its simplest form, a starry s
if a 5-kg object experience a 10-n force for a 0.10-second, then what is momentum change of the object
The greatest induced EMF will occur in a straight wire moving at constant speed through a uniform magnetic field when the angle between the direction of the wire's motion and the d
The natural angular frequency of a S.H.O. of mass 2gm is 0.8rad/sec. It undergoes critically damped motion when taken to a viscous medium. Evaluate the damping force on the oscilla
Simple Microscope: A simple microscope of magnifying glass is a convex lens which form virtual erect and magnifying image of an object which is placed with in it's focal length
Get an expression for lateral shift produced by a parallel sided glass slab placed in air.
Draw the v-t graph of an automobile that accelerates uniformly from rest at t = 0.00 s and covers a distance of 180.0 m in 12.0 s.
Explain Shifting pendulums?? Get two soda water bottles that are exactly the similar size. Fill them with water and cork tightly. Place a rod across the back of two chairs. Sus
An alternating voltage v=250sin800t volts is applied across a series circuit having a 30 resistor and 50µF capacitor. Calculate (a) the circuit impedance, (b) the current ?
what is radioactivity?
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