The resistance of a wire of length Land area of cross-section A is 1.0 Ω . The resistance of a wire of the same material, but of length 41 and area of cross-section 5A will be?
A2.5 Ω
B0.8 Ω
C1.25 Ω
D0.4 Ω
A2.5 Ω
B0.8 Ω
C1.25 Ω
D0.4 Ω
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Which of the following devices is/are based on heating effect of electric current?