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Two conductors A and B are connected to 120V and 200V source repectively. 'A' has a resistivity of 50 ohm-metre and 'B' has a resistivity of 100ohm-metre. Wire A & B has a cross sectional radius of 50cm and 60cm respectively. The wires have a fixed volume of 1 m3. If current flows through each wire for 5 seconds then the heat generated in the wire B is _____ times wire A. |
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Answer» Two conductors A and B are connected to 120V and 200V source repectively. 'A' has a resistivity of 50 ohm-metre and 'B' has a resistivity of 100ohm-metre. Wire A & B has a cross sectional radius of 50cm and 60cm respectively. The wires have a fixed volume of 1 m3. If current flows through each wire for 5 seconds then the heat generated in the wire B is _____ times wire A. |
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