In the balanced condition , the values of the resistance of the fourarms of a Wheatstone bridge are shown in the figure below. The resistance `R_(3) ` has temperature coefficinet `0.0004""^(@)C^(-1)`. If the temperature of `R_(3)` increased by `100^(@)` C , the voltage developed between S and T will be _____volt.

Resistance of a resistor at temperature t^@C is R_t =R_0 (1+alphat + betat^2) , where R_0 is the resistance at 0^@C . The temperature coeffcient of resistance at temperature t^@C is

(a) State Kirchhoff's rules for an electirc network. Using Kirchhoff's rules, obtain the balance condition in terms of the resistances of four arms of Wheatstone bridge. (b) In the meter bridge experimental set up, shown in the figure, the null point 'D' is obtained at a distance of 40 cm from end A of the meter bridge wire. If a resistance of 10 Omega is connected in series with R_(1), null point is obtained at AD = 60 cm. Calculate the values of R_(1) and R_(2).

What is the equivalent resistance between A and B in the figure below if R = 3 Omega

In circuit shown below, the resistance are given in ohms and the battery is assumed ideal with emf equal to 3 volt The voltage across the resistance R_(4) is

At what temperature(in kelvin) would the resistance of a copper wire be half its resistance at 0^@C ? Temperature coefficient of resistance of copper is 3.9 xx 10^(-3).^(@)C^(-1) .

Resistance of a resistor at temperature t^(@)C is R_(f)=R_(0)(1+alpha t+beta t^(2)) . Here R_(0) is the resistance at 0^(@)C .The temperature coefficient of resistance at temperature t^(@)C is

Three resistance P, Q, R each of 2 Omega and an unknown resistance S from the four amrs of a Wheatstone's bridge circuit. When a resistance of 6 Omega is connected in parallel to S the bridge gets balanced. What is the value of S ?

In the following figure, two insulating sheets with thermal resistances R and 3 R as shown in figure. The temperature theta is