Suppose you have three resistor each of value `(30 Omega)`.List all the different resistances you can obtian using them.

Suppose you have three resistor of (20 Omega),(50 Omega)and (100 Omega) .what minimum and maximum resistances can you obtain from these resistors?

A student has 10 resistors, each of resistance r. The minimum resistance that can be obtained by him using these resistors is

A square loop of side 10 cm and resistance 1 Omega is moved towards right with a constant velocity V_0 as shown in . The left arm of the loop is in a uniform magnetic field of 2 T. the field is perpendicular ot the plane of the drawing and is going into it. the loop is connected to a network of resistors each of value 3 Omega with what speed should the loop be moved so that a steady curfrent of 1 mA flows in the loop.

A storage battery of emf 8.0 V and internal resistance 0.5 Omega is being charged by a 120 V de supply using a series resistor of 15.5 Omega . What is the terminal voltage of the battery during charging? What is the purpose of having a series resistor in the charging circuit?

Suppose you have a crop plant with high protein quality, but prone to diseases. If you want to bring the high protein quality and disease resistance in one plant, what type of plant breeding method do you follow? Why?

Water is a universal slvent. But alcohol also dissolves most of the substances soluble in water and also many more. Boiling point of water is 100^(@)C and that of alcohol is 80^(@)C. The specific heat of water is much higher than the specific heat of alcohol. (a) List out three possible differences if instead of water as teh liquid in our body we had alcohol. (b) What value can you derive from this special property of water and its innumerable uses in sustaining life on earth ?

(a) Given n resistores each of resistance R. how will you combine them to get the (i) maximum (ii) minimum effective resistance? (b) Given the resistances of 1 Omega, 2 Omega, 3 Omega. how will be combine them to get an equivalent resistance of (i) (11//3) Omega (ii) (11//5) Omega, (iii) 6 Omega, (iv) (6//11) Omega ? (c ) Determine the equivalent resistance of networks shown in