AIIMS Physics: Questions 481 - 484 of 500

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Question number: 481

» Electrostatics » Gauss's Law

Appeared in Year: 2001

MCQ▾

Question

A cube of metal is given a charge (+Q) , which of the following statements is true: [MP PET]

Choices

Choice (4) Response
a.

Electric field is normal to the surface of the cube

b.

Potential within the cube is zero

c.

Electric field varies within the cube

d.

Potential at the surface of cube is zero

Question number: 482

» Rotational Motion » Moment of Inertia

Appeared in Year: 2004

MCQ▾

Question

A round disc of moment of inertia 150kgm2 about its axis perpendicular to its plane and passing through its centre is placed over another disc of moment of inertia 100kgm2 rotating with an angular velocity 50rads about the same axis. The final angular velocity of the combination of discs is –

[AIPMT]

Choices

Choice (4) Response
a.

50rads

b.

40rads

c.

30rads

d.

60rads

Question number: 483

» Electrostatics » Electric Field

MCQ▾

Question

A hollow charged metal sphere has radius 5m . If the potential difference between its surface and a point at distance 15m from the centre is 20V . Find out the electric field intensity at a distance 15m from the centre.

Choices

Choice (4) Response
a.

9Vm

b.

49Vm

c.

16Vm

d.

23Vm

Question number: 484

» Current Electricity » Electric Current

MCQ▾

Question

The number of electron passing through a heater wire in 30 seconds, if it carries a current of 10 A is approximately –

Choices

Choice (4) Response
a.

1×1022

b.

1×1021

c.

2×1021

d.

2×1022

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