Class 12 Physics - Chapter 1: Electric Charges and Field MCQ Questions

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Your Class 12 Physics Study Path

Question 1

A (frac { 2Ïƒ }{Îµ_0})

B (frac { -2Ïƒ }{Îµ_0})

C (frac { Ïƒ }{Îµ_0})

D (frac { -4Ïƒ }{Îµ_0})

Question 2

Consider two concentric spherical metal shells of radii r₁ and r₂ (r₂ > r₁). If the outer shell has a charge q and the inner one is grounded, the charge on the inner shell is

A -q

B (frac { -r_1q }{r_2})

C zero

D (frac { -r_2q }{r_1})

Question 3

Which of the following statements is, correct?

A Both E on the LHS and q on the RHS will have contributions from q₂ and q₄ only.

B E on the LHS of the above equation will have a contribution from all charges while q on the RHS will have a contribution from q₁, q₃ and q₅ only.

C E on the LHS of the above equation will have a contribution from all charges while q on the RHS will have a contribution from q₂ and q₄ only.

D E on the LHS of the above equation will have a contribution from q₁, q₅ and q₃ while q on the RHS will have a contribution from q₂ and q₄ only.

Question 4

A shall increase but the direction changes because of the intersection of Q with q₂ and q₃

B shall point along the negative x-axis.

C shall decrease along the positive x-axis.

D shall increase along the positive x-axis.

Question 5

Suppose the charge of a proton and an electron differ slightly. One of them is -e, the other is (e + Î”e). If the net of electrostatic force and gravitational force between two hydrogen atoms placed at a distance d (much greater than atomic size) apart is zero, then Î”e is of the order of [Given mass of hydrogen mh = 1.67 Ã— 10^-27 kg]

A 10^-20 C

B 10^-47 C

C 10^-37 C

D 10^-23 C

Question 6

A figure (iv)

B figure (iii)

C figure (ii)

D figure (i)

Question 7

A 4

B 3

C 2

D 1

Question 8

Four charges equal to -Q are placed at the four corners of a square and a charge q is at its centre. If the system is in equilibrium the value of q is

A (frac { Q }{2}) (1 + 2âˆš2)

B (frac { -Q }{2}) (1 + 2âˆš2)

C (frac { Q }{4}) (1 + 2âˆš2)

D (frac { -Q }{4}) (1 + 2âˆš2)

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Class 12 Physics - Chapter 1: Electric Charges and Field MCQ Questions

Your Class 12 Physics Study Path

Consider two concentric spherical metal shells of radii r₁ and r₂ (r₂ > r₁). If the outer shell has a charge q and the inner one is grounded, the charge on the inner shell is

Which of the following statements is, correct?

Four charges equal to -Q are placed at the four corners of a square and a charge q is at its centre. If the system is in equilibrium the value of q is

Practice Complete!

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Class 12 Physics - Chapter 1: Electric Charges and Field MCQ Questions

Your Class 12 Physics Study Path

Consider two concentric spherical metal shells of radii r1 and r2 (r2 > r1). If the outer shell has a charge q and the inner one is grounded, the charge on the inner shell is

Which of the following statements is, correct?

Four charges equal to -Q are placed at the four corners of a square and a charge q is at its centre. If the system is in equilibrium the value of q is

Practice Complete!

Related Student Tools

Grade Calculator

Marks Percentage Calculator

Percentage Calculator

Students Also Read

Discover More on SaralStudy

Latest Blogs

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Quick Links

Popular Study Links

What Students Are Viewing

Consider two concentric spherical metal shells of radii r₁ and r₂ (r₂ > r₁). If the outer shell has a charge q and the inner one is grounded, the charge on the inner shell is