A. 0.60

B. 2.27

C. 2.87

D. 5.14

Consider the following statements A and B and identify the correct answers given below :<br>A : Peltier coefficient is numerically equal to the potential difference across the junctions of the thermocouple through which current is flowing.<br>B : According to Thomson, energy is neither absorbed nor evolved at the junction of a thermocouple but is observed or evolved only along the lengths of both the conductors.

Two cells A and B are connected in the secondary circuit of a potentiometer one at a time and the balancing length are respectively 400 cm and 440 cm. The emf of the cell A is 1.08 volt. The emf of the second cell B in volts is :

In a meter bridge a 30 Ω resistance is connected in the left gap and a pair of resistances P and Q in the right gap. Measured from the left, the balance point is 37.5 cm, when P and Q are in series and 71.4 cm when they are parallel. The values of P and Q (in Ω ) are

An aluminum (resistivity ρ = 2.2 x 10<sup>-8</sup> Ω-m) wire of a diameter 1.4 mm is used to make a<br>4Ω resistor. The length of the wire is<br>

In a metre bridge experiment, the ratio of the left gap resistance to right gap resistance is 2 : 3, the balance point from left is<br>