The resistance of a wire at a temperature t o C and 0 o C are related by:

Physics · Class 12 · CBSE — Current Electricity

1. \(\\R_t\;=R_0(1+\alpha t)\)
2. \(\\R_t\;=R_0(1-\alpha t)\)
3. \(\\R_t\;=R_0^2(1+\alpha t)\)
4. \(\\R_t\;=R_0^2(1-\alpha t)\)

Answer

(A) _t =R_0(1+ t)

Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.

Related practice questions

• A battery is charged at a potential of 15 V for 8 hours when the current flowing is 10 A. The battery on…
• Ten identical cells each of emf and internal resistance r are connected in series to form a closed circuit…
• The figure shows the voltage (V) versus the current (I) graphs for a wire at two temperatures T _1 and T _2 …
• A cell of constant emf is first connected to a resistance R 1 and then connected to a resistance R 2 . If…
• Four resistors, each of resistance R and a key K are connected as shown in the figure. The equivalent…
• A filament bulb (500 W, 100 V) is to be used in a 230 V main supply. When a resistance R is connected in…
• The charge flowing through a resistance R varies with time t as Q = at - bt 2 , where a and b are positive…
• The potential difference applied to an X-ray tube is 5 kV and the current through it is 3.2 mA. Then the…

More Current Electricity questions · Browse all practice questions