Question

The e.m.f of The battery in a thermocouple is doubled. The rate of heat generated at one of the junction will.

Options

• Become half

• Remain uncharged

• Become double

• Become four times.

Answer 1

Become double

Explanation:

Peltier heat is produced at one junction due to current, and it varies directly with the current flowing and thus the e.m.f. of the battery used.

`(V_2 - V_1) oo (theta_2 - theta_1)`

⇒ `dv  oo  d theta`