25 Questions MCQ Test Science Class 10 - Test: Electricity - 3
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Work done in moving a unit positive test charge from infinity to a point inside an electric field, is called
Detailed Solution for Test: Electricity - 3 - Question 3
Electric potential: An electric potential is defined as the amount of electric potential energy that a unitary point electric charge would have if located at any point of space.
It is equal to the work done by an electric field in carrying a unit positive charge from infinity to that point.
Work done is moving a unit positive test charge from one point to other inside an electric field, is called
Detailed Solution for Test: Electricity - 3 - Question 4
Potential difference is the difference in electric potential energy between two points.
It is the amount of work done in moving a unit positive charge from one point to another point in an electric field. This is measured in volt.
With increase in temperature, resistance of a conductor
Detailed Solution for Test: Electricity - 3 - Question 16
As the temperature of a metallic conductor increases, the kinetic energy of the electrons of the conductor also increases
Due to this increase in kinetic energy more obstruction is offered to the flowing electrons i.e. current.
Therefore, as more obstruction is offered to the flowing electrons, the resistance is increased.
When electric current is passed, electrons move from
Detailed Solution for Test: Electricity - 3 - Question 21
Since electrons are negative they should be repelled by the negative charge and attracted by the positive charge, i.e., in an electric field the electrons must move from regions of low potential to the regions with high potential by the action of the electrical forces.
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