முதன்மை உள்ளடக்கத்துக்குச் செல்

State PCS PYQPrelims 2022

BPSC – Combined Competitive Examination · வினா 120

A potential difference develops in a conductor due to a temperature difference along it. This phenomenon is called:

Joule effect
Seebeck effect
Peltier effect
Thomson effect
None of the above / More than one of the above

விடையைக் காட்டு & விளக்கம்

விடை: (D) Thomson effect

விளக்கம்

The Thomson effect involves a single conductor whose ends are at different temperatures.

(A) தவறு
Wrong: heating due to current.
(B) தவறு
Wrong: needs a junction of two different metals.
(C) தவறு
Wrong: heating/cooling at a junction due to current.
(D) சரி
Correct: concerns a single conductor with a temperature gradient.
(E) தவறு
Wrong: only one of the options A–D is correct.