Variation of resistance of the conductor with temperature is as shown .The temperature co-efficient (α) of the conductor is

Question

Variation of resistance of the conductor with temperature is as shown .The temperature co-efficient (α) of the conductor is (A) (R0/m) (B) mR0 (C) m2 R0 (D) (m/R0)

Tardigrade Admin · Accepted Answer

Rt=R0(1+α Δ t) where, α is temperature coefficient of conductor =R0+R0 α Δ T Slope of graph m=R0 α ∴ α=(m/R0) <img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/physics/554c8597ff22e923742161ef253c4908-.png" />

Q. Variation of resistance of the conductor with temperature is as shown .The temperature co-efficient $(α)$ of the conductor is

$\frac{R _{0}}{m}$

$m R_{0}$

$m^{2} R_{0}$

$\frac{m}{R _{0}}$

$R_{t} = R_{0} (1 + α Δ t)$
where, $α$ is temperature coefficient of conductor
$= R_{0} + R_{0} α Δ T$
Slope of graph
$m = R_{0} α$
$∴ α = \frac{m}{R _{0}}$

Q. Variation of resistance of the conductor with temperature is as shown .The temperature co-efficient (α) of the conductor is

mR0​​

mR0​

m2R0​

R0​m​