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TG EAMCET (EAPCET) Physics Multiple Choice Questions (MCQs)

MCQs - TG EAMCET (EAPCET) Physics

MCQs for TG EAMCET (EAPCET) Physics - Serial 81 to 90

81. Which of the following is true regarding the additivity of electric charges?
a) The total charge of a system is the algebraic sum of individual charges.
b) Charges cancel each other out when brought together.
c) Charges can only be added algebraically if they have the same sign.
d) The total charge of a system is always zero.

Answer: a) The total charge of a system is the algebraic sum of individual charges.

82. According to Coulomb's law, the force between two point charges is proportional to the product of the charges and inversely proportional to the square of their separation. What is the constant of proportionality?
a) Electric field constant
b) Coulomb constant
c) Gravitational constant
d) Magnetic constant

Answer: b) Coulomb constant

83. What is the electric field at a point due to a system of charges?
a) The algebraic sum of the fields due to individual charges
b) The sum of the potentials due to individual charges
c) The vector sum of forces on a test charge
d) The magnitude of the force per unit charge

Answer: a) The algebraic sum of the fields due to individual charges

84. Which of the following represents Gauss's law?
a) ∮ E · dA = ρ/ε₀
b) ∮ E · dA = Q/ε₀
c) ∮ E · dA = σ/ε₀
d) ∮ E · dA = 4πQ

Answer: b) ∮ E · dA = Q/ε₀

85. What is the physical significance of electric field lines?
a) They represent the direction of the electric flux.
b) They represent the direction of the gravitational force.
c) They indicate the path of a charged particle.
d) They represent the magnitude of the electric potential.

Answer: a) They represent the direction of the electric flux.

86. The electric field due to a uniformly charged infinite plane sheet is:
a) Zero everywhere
b) Directly proportional to the distance from the sheet
c) Inversely proportional to the distance from the sheet
d) Constant and independent of the distance from the sheet

Answer: d) Constant and independent of the distance from the sheet

87. What is the potential energy of a dipole in a uniform external electric field?
a) Zero
b) Positive
c) Negative
d) Depends on the angle between the dipole moment and the field

Answer: d) Depends on the angle between the dipole moment and the field

88. The capacitance of a capacitor depends on all of the following except:
a) Area of the plates
b) Distance between the plates
c) Voltage across the plates
d) Dielectric constant of the material between the plates

Answer: c) Voltage across the plates

89. The energy stored in a capacitor is given by:
a) U = ½ QV
b) U = QV
c) U = ½ CV²
d) U = ½ CVQ

Answer: a) U = ½ QV

90. Which of the following is true for capacitors connected in series?
a) The total capacitance is greater than the individual capacitances.
b) The charge on each capacitor is the same.
c) The total voltage is the same across each capacitor.
d) The total capacitance is the sum of individual capacitances.

Answer: b) The charge on each capacitor is the same.

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TG EAMCET (EAPCET) Physics Multiple Choice Questions (MCQs)

MCQs for TG EAMCET (EAPCET) Physics - Serial 81 to 90

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