Current Electricity — Important Questions
ICSE · Class 10 · Physics
43 important questions from Current Electricity for ICSE Class 10 Physics, with answers. Includes multiple choice and multiple correct questions.
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See them allImportant Questions from Current Electricity
Which of the following factors affect the resistance of a conductor? (Select all correct answers)
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Length of conductor, Area of cross-section, Nature of material, Temperature
Resistance depends on length (R ∝ l), area of cross-section (R ∝ 1/A), nature of material, and temperature. Color does not affect resistance.
What is the unit of electric potential?
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Volt
The unit of electric potential and potential difference is volt (V). One volt is the potential difference when one joule of work is done to move one coulomb of charge.
In series combination of resistors, which quantity remains the same?
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Current
In series combination, current remains the same through all resistors as there is only one path for current flow. Voltage divides among the resistors.
Which materials are good conductors of electricity? (Select all correct answers)
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Silver, Copper, Aluminum
Metals like silver, copper, and aluminum have many free electrons and are good conductors. Rubber and glass are insulators with very high resistance.
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