Question

A constant potential difference is applied across a resistance. Consider variation of resistance with temperature. Which graph represents best the variation of power produced in resistance versus resistance?

• A. Straight Line
• B. Circle
• C. Parabola
• D. Hyperbola

Answer 1

The correct option is D Hyperbola

Power produced in resistance $P=\frac{V^2}{R}$

$⟹$ $P\propto \frac{1}{R}$ $(\because V=constant)$

Thus the graph of P versus R graph is a hyperbola.Hence correct option is option D.