Physics Electricity CBSE Board 2026 Medium
(i) State the relationship of the resistance (R) of a wire with its area of cross-section (A) and its length…
- (i)State the relationship of the resistance () of a wire with its area of cross-section () and its length (). With the help of this relation, define resistivity of the material of the wire.
- (ii)In an electric circuit, 2 A electric current flows through a resistor for 50 seconds. (I) Calculate the heat produced in the wire. (II) If another resistor is connected in parallel to the given resistor, calculate the heat produced in the circuit in 50 seconds.
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