two resistors of resistance300 and 600ohm at 0°C having thermal coefficient of resistance alpha and 3alpha resp. if they are connected in parallel , then equivalent thermal coefficient of resistance is
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Answer:
The thermal coefficient of resistance is ⇒α=
R
1
dt
dR
Equivalent resistance in series= R
1
+R
2
=R
eq.
dt
dR
eq.
=
dt
dR
1
+
dt
dR
2
α
eq.
R
eq.
=α
1
R
1
+α
2
R
2
α
eq.
=
R
1
+R
2
α
1
R
1
+α
2
R
2
Explanation:
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