A carbon resistance with color band is `2000 Omega`. If red band is replaced by green band then the new resistance is : (A) `500 Omega` (B) `300 Omega` (C) `400 Omega` (D) `100 Omega`

Current in 3 Omega resistance is

A 200Omega resistor has a certain color code. If one replaces the red color by green in the code, the new resistance will be:

A resistance of 2 Omega is connected across one gap of a meter bridge (the length of the wire is 100 cm and an unknown resistance, greater than 2 Omega , is connected across the other gap. When these resistance are interchanged, the balance point shifts by 20cm . Neglecting any corrections, the unknown resistance is. (a) 3 Omega (b) 4 Omega ( c) 5 Omega (d) 6 Omega .

Two resistors having resistance 4 Omega and 6 Omega are connected in parallel. Find their equivalent resistance.

How can three resistors of resistances 2 Omega,3 Omega , and 6 Omega be connected to give a total resistance of (a) 4 Omega (b) 1 Omega ?

What resistance must be connected to a 15 Omega resistance to provide an effective resistance of 6 Omega ?

Equivalent resistance between the points A and B (in Omega ) .

A platinum resistance thermometer reads 0^@ C when its resistance is 80 Omega and 100^@ C when its resistance is 90 Omega . Find the temperature at which the resistance is 86 Omega .

The resistance of a wire at 20^(@)C is 20Omega and at 500^(@)C is 60Omega . At which temperature its resistance will be 25Omega ?

(a) Given n resistors each of resistance R . How will you combine them to get the (i) maximum (ii) minimum effective resistance ? What is the ratio of the maximum to minimum resistance ? (b) Given the resistances of 1 Omega, 2 Omega, 3 Omega , how will you 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 Figure.