Physics Electricity CBSE Board 2026 Medium
(i) What is meant by resistance in an electric circuit? (ii) In a series electric circuit comprising a resist…
- (i)What is meant by resistance in an electric circuit ?
- (ii)In a series electric circuit comprising a resistor made of a metallic wire, the ammeter reads 500 mA. If the length of wire is doubled and area of cross-section is made half, what will be the new reading of ammeter ?
- (iii)How will the resistivity of a wire be affected if both, the length of the wire and its area of cross-section, are doubled ? Justify your answer.
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