Electric Current
Telangana Board · Class 10 · Physical Sciences
Most important questions from Electric Current for Telangana Board Class 10 Physical Sciences board exam 2026. MCQs, short answer, and long answer questions with marks.
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Sample Questions
Which materials are good conductors of electricity? (Select all correct answers)
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Copper, Silver, Aluminum
Metals like copper, silver, and aluminum are good conductors due to free electrons, while rubber and glass are insulators.
In a series circuit, the total resistance is:
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Equal to the sum of individual resistances
In series connection, total resistance R = R₁ + R₂ + R₃ + ..., as resistors are connected end-to-end.
Which factors affect the resistance of a conductor? (Select all correct answers)
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Length of conductor, Cross-sectional area, Material of conductor, Temperature
Resistance depends on length (R ∝ l), area (R ∝ 1/A), material (resistivity), and temperature. Color doesn't affect resistance.
Electric power is given by the formula:
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P = VI
Electric power P = VI, where V is voltage and I is current. This represents the rate of energy consumption.
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