Specific resistance of the material of a wire is `44 x 10^6 Omega` cm. If the resistance of the wire is `14 Omega` and its diameter 1 mm, calculate the length of the wire.

The resistance of a Cu wire at 20^@C is 200Omega what is the resistance at 50^@C ?

The resistance of a 10m long wire is 10 Omega . Its length is increased by 25% by stretching. The resistance of the wire is now

The diameter of a sphere is 6 cm.It is melted and drawn into a wire of diameter 2 mm.The length of the wire is__

2m/copper wire of length applying force length increase by 1mm. If the energy of the wire is converted to heat energy, calculate the increasing temp^n of the wire.(Y= 12.5 × 10^10 N/m^2; ρ = 9 × 10^3 kg /m^3 ; s = 385 J/kg – K)

A resistance wire connected in the left gap of a metre bridge balances a 10Ω resistance in the right gap at a point which divides the bridge wire in the ratio 3:2. If the length of the resistance wire is 1.5m, then find the length of 1Ω of the resistance wire.

Two cell of emf. 1.5v and 2 v and internal resistance 2 and 1Omega respectively have their negative terminal joined by a wire of 6Omega and positive terminal by another wire of 4Omega A third resistance of 8Omega connected mid point of these wire. Find the potential difference at the end of the third wire.