Discuss the working Principle of Wheat stone bridge. Explain with diagram how will determine the resistance of a resistor which is unknown using this method.

Explain the working principle of a Van de Graaff generator. State its uses.

Explain the working principle of hydraulic press using Pascal's law.

(i) What is Zener diode? (ii) Explain with circuit diagram how a Zener diode regulates voltage across a load resistance.

Explain, with circuit diagram, how a Zener diode regulates voltage across a load resistance.

How resistance can be determined using the principle of Wheatstone bridge ? Derive the principle .

Draw the circuit diagram for the determination of unknown resistance with the help of a metre bridge .

Which method of plant breeding resulted in the production of hessian fly resistant wheat variety ?

How cardiac output is determined by Fick's principle using O_2 consumption method?

In a metre-bridge [Fig. (a)], the balance point is found to be at 39.5 cm from the end A, when the resistor S is of 12.5Omega Determine the resistance of R. Why are the connections between the resistors in a Wheatstone bridge or metre-bridge made of thick copper strips?