Medium: 1. In an experiment, values of two resistances are measured to be r1 = (5.0 ± 0.2) and r2 = (10.0 ± 0.1). Find the values of total resistance in parrallel with limits of...

obvisously percentage error is minimum when sin2 is maximum. 20 = or 4. The value of a force on a body is 20N is SI units. What is the value of this force in CGS units, that is dynes...

The value of the unknown resistance lies in-between 16.38 and 16.39 . The unknown vaalue may be the average of the two i.e. X = = 16.385 Problems: Easy: 1. E, m, J and G denote energy,...

Key point: • The accuracy of the post office box depends on the choice of the ratio arm - for eg: if R2 : R1 = 1 : 1 then unknown resistance is obtained within ± 1 - of ratio R2 :...

Solution:- The average of l1 and l1' is calculated as L1; and the average of l2 and l2' is calculated as L2. The given observation table is completed as follows:

Introduction It works on the pricipal of Wheatstone bridge. It is so called because it uses a wire which is a metre long. The wire is made of uniform cross-section of a material with a high...

Q-2: Suppose in an insulating medium having dielectric constant K=1, and volume density of positive charge varies with coordinates according to law  . A particle of mass m ...

Now can be got easily by integrating,

Medium: Two parallel conducting plates contain charge Q1 and Q2 as shown. Find distribution of charges on four surfaces. ...

solution: Let q be the charge on inner shell when it is earthed Vinner = 0.

Electric Potential: It is the work needed to bring a unit positive charge from infinity to the given point.

Flux and Gauss Law: Flux- It literally means the no of field lines passing through it. It is defined as.  

Illustration: Q-1: A field of 103 N/C acts at a point. What will be the force on a charge of 3´10-6C and -2´10-6C,

The study of electrostatic introduces us to the vast world by electricity, magnetism, current, working of circuits and charges. Right from the attraction between a proton and...

Question :- Electrical circuit is shown in figure. Calculate the potential difference across the resistor of 400 ohms as will be measured by the voltmeter V of resistance 400 either by applying...

Now, as power through 5 resistance is 45 J/S. Applying Kirchoff's loop rule in the loop. Thus, net current is 4A through 2 resistor. Thus, power lost from this resistance = (2) X 42 = 32...

d) Potentiometer :- It is a device used to measure potential difference with high accuracy, without drawing any current from the unknown source. [* Basic Figure of a potentiometer : ??] Principle...

(b) Parallel grouping :- Applying Kirchoff's Law through branch : (c) Series grouping with different batteries :- Eeq = E1 + E2 + E3 +.................... + En Req = r1 + r2 +...

So, their net resistance = We reduced, the fugure now to : Further resistance AC and AB are II So, their net resistance = So, new diagram : Resistance

Illustration - 3. Find the current in brand BE and potential difference VBD in. Assume the shown current distribution. We can choose arbitarily any type of distribution as we...