Your friend needs 10 ohms resistance. He came to you and asked, but you have 40 ohms resistance.
Show that their effective resistance is 10 ohms.

Your friend needs 10 ohms resistance. He came to you and asked, but you have 40 ohms resistance. How the resistors which are taken are connected ?

Your friend needs 10 ohms resistance. He came to you and asked, but you have 40 ohms resistance. How many resistors your friend will ask you ?

Three resistors each of resistance 10 ohm are connected, in turn, to obtain (i) minimum resistance (ii) maximum resistance. Complete (a) The effective resistance in each case (b) ratio of minimum to maximum resistance so obtained.

The resistance of the wire is 121 ohm. It is divided into .n. equal parts and they are connected in parallel, then effective resistance is 1 ohm. The value of .n. is

A wire of resistance 18 ohm is bent to form an equilateral triangle. The resistance across any two vertices of the triangle is (in ohm)

The resistance of a resistance thermometer has values 2.71 and 3.70 ohm at 10°c and 100°c. temperature at which the resistance is 3.26 ohm is

Three unequal resistor in parallel are equivalent to a resistance 1Omega If two of them are in the ratio 1:2 and if no resistance value is fractional the largest of the three resistance in ohm is

The resistances of the four arms P,Q,R and S in a Wheatstone's bridge are 10 ohm, 30 ohm, 30 ohm and 90 ohm, respectively. The e.m.f. and internal resistance of the cell are 7 volt and 5 ohm respectively. If the galvanometer resistance is 50 ohm, the current drawn from the cell will be