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Question: Peltier co-efficient of a thermo couple is 2 nano volts. How much heat is developed at a junction if...

Peltier co-efficient of a thermo couple is 2 nano volts. How much heat is developed at a junction if 2.5 amp current flows for 2 minute

A

6 ergs

B

6 × 10–7 ergs

C

16 ergs

D

6 × 10–3 erg

Answer

6 ergs

Explanation

Solution

H=πit=(2×109)×2.5×(2×60)=6×107J=6ergH = \pi it = (2 \times 10^{- 9}) \times 2.5 \times (2 \times 60) = 6 \times 10^{- 7}J = 6ergS