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Questions and Answers
What is the potential gradient at a point in an electric field if a force of 2.5 N is experienced by a point charge of 5 x 10-8 C?
What is the potential gradient at a point in an electric field if a force of 2.5 N is experienced by a point charge of 5 x 10-8 C?
What is the dimension of electric permittivity?
What is the dimension of electric permittivity?
What are the capacitances of two capacitors when their equivalent capacitance in parallel is 16 µF and in series is 3 µF?
What are the capacitances of two capacitors when their equivalent capacitance in parallel is 16 µF and in series is 3 µF?
If the current in each parallel conductor is doubled and the distance between them is halved, what happens to the force between them?
If the current in each parallel conductor is doubled and the distance between them is halved, what happens to the force between them?
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What unit is used to measure electric potential at a point in an electric field?
What unit is used to measure electric potential at a point in an electric field?
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What happens to the heat generated in one second if the potential difference across a conductor is doubled?
What happens to the heat generated in one second if the potential difference across a conductor is doubled?
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What is the energy gained by an electron when it is accelerated under a potential difference of 200V?
What is the energy gained by an electron when it is accelerated under a potential difference of 200V?
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What is the resultant capacitance when four capacitors, each of capacitance 0.5µF, are connected in parallel?
What is the resultant capacitance when four capacitors, each of capacitance 0.5µF, are connected in parallel?
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Study Notes
Objective and Very Short Type Questions with Answers
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A point charge of 5 x 10^-8 C experiences a force of 2.5 N. The electric potential gradient at that point is calculated to be 5 x 10^7 N/C.
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The dimension for electric permittivity is represented as ML^-1T^-3A^1.
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For two capacitors connected in parallel with an equivalent capacitance of 16 µF and in series with 3 µF, possible capacitances include pairs such as 4 µF and 12 µF.
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The force F between two parallel conductors, when the current is doubled and the distance halved, increases to 4F due to the relationship of current and distance in electromagnetic theory.
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The equivalent capacitance in a specified circuit arrangement may yield options such as 0.2 µF.
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The force between two charges of magnitude Q1 and Q2 separated by distance r, originally 25 N, can be reduced to 5 N by changing their separation to r/√5.
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The electric potential at a point is measured in units of Nm/C.
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If the potential difference across a conductor is doubled, the heat generated in one second will increase by four times.
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The capacity of a spherical conductor with a radius of 10 m can reach 9 x 10^9 farads.
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The expression for energy stored in a capacitor is given by 1/2 CV², which is a fundamental concept in capacitor technology.
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An electron accelerated through a potential difference of 200 V gains energy equivalent to 200 eV.
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When four capacitors, each with a capacitance of 0.5 µF, are connected in parallel, the total capacitance becomes 2 µF, illustrating the additive nature of capacitance in parallel configurations.
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Description
This quiz focuses on sample papers for +2 level students, featuring a wide array of questions including multiple choice (MCQs), very short, short, and long-type questions. Engage with well-structured questions and hints to enhance your understanding of key electrical concepts. It's an essential resource for exam preparation.
