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31 Oct 2021
Given information
It is given that a 1.5 V battery is used for the electric blanket to generate 18W of heating power using a heating element of copper wire of diameter 0.50 mm.
Step-by-step explanation
Step 1.
The power consumption by a resistor is given as,
Area with diameter,(d ) is
The resistance (R) of a resistor is related with the resistivity of it’s material (ρ), it’s length (l) and the cross-sectional area (A) as,
Where, d is the diameter of the resistor.
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