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Previous Year Questions

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CBSE
#1 Class 12 Physics Electric Charges and Fields 2024 Mcq 1M
Three point charges are placed at the corners of an equilateral triangle. Assuming only electrostatic forces are acting, the system:
A. Can never be in equilibrium
B. Will be in equilibrium if charges rotate about the centre of the triangle
C. Will be in equilibrium if charges have same magnitude but different signs
D. Will be in equilibrium if charges have different magnitudes and different signs
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CBSE
#2 Class 12 Physics Electric Charges and Fields 2011 Mcq 1M
Two charged spheres separated by a distance d exert some force F on each other. If they are immersed in a liquid of dielectric constant 4, then what is the force exerted, if all other conditions are same?
A. 2F
B. 4F
C. F/2
D. F/4
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CBSE
#3 Class 12 Physics Electric Charges and Fields 2024 Mcq 1M
The electrostatic field is:
A. conservative
B. non-conservative
C. both (a) and (b)
D. none of these
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CBSE
#4 Class 12 Physics Electric Charges and Fields 2019 Mcq 1M
When a body is charged, its mass:
A. increases
B. decreases
C. remains same
D. may increase or decrease
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CBSE
#5 Class 12 Physics Electric Charges and Fields 2019 Mcq 1M
When a body is connected to the earth, then electrons from the earth flow into the body. It means that the body is:
A. unchanged
B. an insulator
C. positively charged
D. negatively charged
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CBSE
#6 Class 12 Physics Electric Charges and Fields 2021 Mcq 1M
Ampere-hour is unit of:
A. Power
B. Charge
C. Energy
D. Potential difference
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CBSE
#7 Class 12 Physics Electric Charges and Fields 2023 Mcq 1M
The magnitude of the electric field due to a point charge object at a distance of 4.0 m is 9 N/C. From the same charged object the electric field of magnitude 16 N/C will be at a distance of:
A. 1 m
B. 2 m
C. 3 m
D. 6 m
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