Physics-
General
Easy

Question

Two long parallel wires carrying currents 2.5A and I amp in the same direction (directed into plane) are held at P and Q respectively as shown. The points P and Q are located at 5m and 2m respectively from a collinear point R. An electron moving with a velocity of 4 cross times 10 to the power of 5 end exponent m divided by s along positive x axis experiences a force of 3.2 cross times 10 to the power of negative 20 end exponent N at the point 'R'. The value of I is

  1. 4A    
  2. 6A    
  3. 8A    
  4. 1A    

The correct answer is: 4A

Related Questions to study

General
Physics-

Wires 1 and 2 carrying currents i subscript 1 end subscript and i subscript 2 end subscript respectively are inclined at an angle theta to each other. What is the force on a small element dl of wire 2 at a distance r from wire 1 due tomagnetic field of wire 1 ?

Wires 1 and 2 carrying currents i subscript 1 end subscript and i subscript 2 end subscript respectively are inclined at an angle theta to each other. What is the force on a small element dl of wire 2 at a distance r from wire 1 due tomagnetic field of wire 1 ?

Physics-General
General
Physics-

An electron accelerated through a potential difference 'V' passes through a uniform transverse magnetic field and experiences a force F. If the accelerating potential is increased to 2V, the electron in the same magnetic field will experience a force

An electron accelerated through a potential difference 'V' passes through a uniform transverse magnetic field and experiences a force F. If the accelerating potential is increased to 2V, the electron in the same magnetic field will experience a force

Physics-General
General
Physics-

A plane metallic sheet is placed with its face parallel to lines of magnetic induction B of a uniform field. A particle of mass m and charge q is projected with a velocity v from a distance ' d ' from the plane normal to the lines of induction. Then the maximum velocity of projection for which the particle does not hit the plane is,

A plane metallic sheet is placed with its face parallel to lines of magnetic induction B of a uniform field. A particle of mass m and charge q is projected with a velocity v from a distance ' d ' from the plane normal to the lines of induction. Then the maximum velocity of projection for which the particle does not hit the plane is,

Physics-General
parallel
General
Chemistry-

Which of the following describes the criterion of spontaneity

Which of the following describes the criterion of spontaneity

Chemistry-General
General
Chemistry-

A solution of sodium sulphate is electrolyzed using inert electrodes and the gases evolved are stored in a container. What is the mole fraction of gas in container which have higher concentration.

A solution of sodium sulphate is electrolyzed using inert electrodes and the gases evolved are stored in a container. What is the mole fraction of gas in container which have higher concentration.

Chemistry-General
General
Maths-

The function 2x3 – 9x2 + 12x – 3 is increasing when x belongs to the interval

We should know the way to find the minimum or maximum value.

The function 2x3 – 9x2 + 12x – 3 is increasing when x belongs to the interval

Maths-General

We should know the way to find the minimum or maximum value.

parallel
General
Maths-

The area of a triangle is measured in terms of b, c, A If A = 63º and there is an error of 15 in A, the percentage error in the area is

The area of a triangle is measured in terms of b, c, A If A = 63º and there is an error of 15 in A, the percentage error in the area is

Maths-General
General
Maths-

The point on the ellipse 16x2 + 9y2 = 400 where ordinate decrease at the same rate at which the abscissa increases is

For such questions, we should know how to find the derivates. We should know the concept of abscissa and ordinate.

The point on the ellipse 16x2 + 9y2 = 400 where ordinate decrease at the same rate at which the abscissa increases is

Maths-General

For such questions, we should know how to find the derivates. We should know the concept of abscissa and ordinate.

General
Maths-

The displacement of a particle in time ‘t’ is given by S = t3 – t2 – 8t – 18. The acceleration of the particle when its velocity vanishes is

For such questions, we should know relation between displacement, velocity and time. We should also know how to find first and second order derivate.

The displacement of a particle in time ‘t’ is given by S = t3 – t2 – 8t – 18. The acceleration of the particle when its velocity vanishes is

Maths-General

For such questions, we should know relation between displacement, velocity and time. We should also know how to find first and second order derivate.

parallel
General
Maths-

If S subscript n end subscript equals stretchy sum from k equals 1 to n of   a subscript k end subscript and stack l i m with n rightwards arrow infinity below   a subscript n end subscript equals a comma then stack l i m with n rightwards arrow infinity below   fraction numerator S subscript n plus 1 end subscript minus S subscript n end subscript over denominator square root of stretchy sum from k equals 1 to n of   k end root end fraction is equal to

If S subscript n end subscript equals stretchy sum from k equals 1 to n of   a subscript k end subscript and stack l i m with n rightwards arrow infinity below   a subscript n end subscript equals a comma then stack l i m with n rightwards arrow infinity below   fraction numerator S subscript n plus 1 end subscript minus S subscript n end subscript over denominator square root of stretchy sum from k equals 1 to n of   k end root end fraction is equal to

Maths-General
General
Maths-

stack l i m with n rightwards arrow infinity below   open square brackets fraction numerator 1 over denominator n to the power of 3 end exponent plus 1 end fraction plus fraction numerator 4 over denominator n to the power of 3 end exponent plus 1 end fraction plus fraction numerator 9 over denominator n to the power of 3 end exponent plus 1 end fraction plus horizontal ellipsis horizontal ellipsis. plus fraction numerator n to the power of 2 end exponent over denominator n to the power of 3 end exponent plus 1 end fraction close square brackets equals

stack l i m with n rightwards arrow infinity below   open square brackets fraction numerator 1 over denominator n to the power of 3 end exponent plus 1 end fraction plus fraction numerator 4 over denominator n to the power of 3 end exponent plus 1 end fraction plus fraction numerator 9 over denominator n to the power of 3 end exponent plus 1 end fraction plus horizontal ellipsis horizontal ellipsis. plus fraction numerator n to the power of 2 end exponent over denominator n to the power of 3 end exponent plus 1 end fraction close square brackets equals

Maths-General
General
Maths-

stack l i m with x rightwards arrow 0 below   fraction numerator square root of 1 plus x end root minus square root of 1 minus x end root over denominator sin to the power of negative 1 end exponent invisible function application x end fraction equals

stack l i m with x rightwards arrow 0 below   fraction numerator square root of 1 plus x end root minus square root of 1 minus x end root over denominator sin to the power of negative 1 end exponent invisible function application x end fraction equals

Maths-General
parallel
General
Physics-

The figure shows a transparent slab of length 1 m placed in air whose refractive index in x direction varies as mu equals 1 plus x to the power of 2 end exponent left parenthesis 0 less than x less than 1 right parenthesis. The optical path length of ray R will be

The figure shows a transparent slab of length 1 m placed in air whose refractive index in x direction varies as mu equals 1 plus x to the power of 2 end exponent left parenthesis 0 less than x less than 1 right parenthesis. The optical path length of ray R will be

Physics-General
General
Physics-

A parallel beam of light 500 nm is incident at an angle 30° with the normal to the slit plane in a young's double slit experiment. The intensity due to each slit is Io. Point O is equidistant from S subscript 1 end subscript and S subscript 2 end subscript. The distance between slits is 1 mm.

A parallel beam of light 500 nm is incident at an angle 30° with the normal to the slit plane in a young's double slit experiment. The intensity due to each slit is Io. Point O is equidistant from S subscript 1 end subscript and S subscript 2 end subscript. The distance between slits is 1 mm.

Physics-General
General
Physics-

In a Young's Double slit experiment, first maxima is observed at a fixed point P on the screen. Now the screen is continuously moved away from the plane of slits. The ratio of intensity at point P to the intensity at point O (centre of the screen)

In a Young's Double slit experiment, first maxima is observed at a fixed point P on the screen. Now the screen is continuously moved away from the plane of slits. The ratio of intensity at point P to the intensity at point O (centre of the screen)

Physics-General
parallel

card img

With Turito Academy.

card img

With Turito Foundation.

card img

Get an Expert Advice From Turito.

Turito Academy

card img

With Turito Academy.

Test Prep

card img

With Turito Foundation.