Question

Electrical method of calculating specific heat capacity of solid/liquid is described by

• A. $P=mc\Delta T$
• B. $Pt=mc\Delta T$
• C. $P=mc/\Delta T$
• D. $Pt=mc/\Delta T$

Answer 1

The correct option is B $Pt=mc\Delta T$

In electrical method to measure specific heat capacity of a solid/liquid, heat energy is supplied by an electrical appliance of known power $P$. Rise of temperature $\Delta T$ is noted in time $t$ for mass $m$.

Electrical energy supplied = Heat Energy gained

$Pt=mc\Delta T$