# Electromagnetic Theory-Dynamics of Charged Particles in Static Electromagnetic Field (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 1 - 3 of 3

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## Question number: 1

» Electromagnetic Theory » Dynamics of Charged Particles in Static Electromagnetic Field

Appeared in Year: 2014

MCQ▾

### Question

A charged particle moves in a helical path under the influence of a constant magnetic field. The initial velocity is such that the component along the magnetic field is twice the component in the plane normal to magnetic field.

The ratio of the pinch to the radius R of the helical path is –

(December)

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 2

» Electromagnetic Theory » Dynamics of Charged Particles in Static Electromagnetic Field

Appeared in Year: 2016

MCQ▾

### Question

Suppose that free charges are present in a material of dielectric constant and resistivity . Using Ohm’s law and the equation of continuity for charge, the time required for the charge density inside the material to decay by is closest to: (December)

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 3

» Electromagnetic Theory » Dynamics of Charged Particles in Static Electromagnetic Field

Appeared in Year: 2016

MCQ▾

### Question

A parallel plate capacitor is formed by two circular conducting plates of radius separated by a distance , where . It is being slowly charged a current that is nearly constant. At an instant when the current is , the magnetic induction between the plates at a distance from the centre of the plate, is: (December)

### Choices

Choice (4) Response

a.

b.

c.

d.

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