Current as a Pseudo Vector

Q. The potential at a point x (measured in m) due to some charges situated on the x axis is given by V(x) = 20/x-4 .the electric field E at x=4 m is given by (1)10/9 V/m and in the positive x direction (2)5/3. V/m and in the negative x direction (3)5/3 V/m and in the positive x direction (4)10/9. V/m and in the negative x direction

Q.

What will be the nature of electric potential at a place where the electric field is zero?

Q.

Consider a uniform electric field E = 3 × 10³ îN/C. (a) What is the flux of this field through a square of 10 cm on a side whose plane is parallel to the yz plane? (b) What is the flux through the same square if the normal to its plane makes a 60° angle with the x-axis?

Q.

Why electric current doesn't obey traingle rule of addition even though it has magnitude and direction

Q. 4. In Millikans oil drop experiment, a charged drop of mass1.8 10-14 kg is stationary between the plates. Thedistance between the plates is 0.9 cm and potentialdifference between the plates is 2000 volt. The number ofelectrons on the oil drop is(1) 10(3) 50(2) 5(4) 20

Q. { At a point high in the Earths atmosphere, }He^{2+} ions in a concentration of }2.8×10^{12}/m^3 are moving due noth }}{ at a speed of }2.0×10^6m/s . Also, a }7.0×10^{11}/m^3 concentration of }O_2^- ions is moving due south at a speed }}{ of }7.2×10^° m/s . Determine the magnitude and direction of the net current passing through unit area (AM)?

Q. Statement-1: Electric curent is a scalar quantity
and
Statement -2: Electric current does not obey law of vector addition

1. Statement -1 is False Statement -2 is True;
2. Statement -1 is True Statement -2 is True;
   Statement -2 is a correct explanation for Statement -1
3. Statement -1 is True Statement -2 is True;
   Statement -2 is NOT a correct explanation for Statement -1
4. Statement -1 is True Statement -2 is False;

Q. Statement 1: Current has a direction and magnitude so it is a vector.
Statement 2: All vectors obey the parallelogram law of vector addition

1. Statement 1 is correct, Statement 2 is the correct and Statement 2 is the correct explanation for statement 1
2. Statement 1 is correct, Statement 2 is the correct and Statement 2 is not the correct explanation of statement 1
3. Statement 1 is correct but Statement 2 is wrong
4. Statement 1 is wrong but Statement 2 is correct

Q.

Consider a uniform electric field E =3x10³ i N/C. What is the flux of this field through a square of 10 cm on a side whose plane is parallel to YZ plane.What is the flux through the same square if the normal to its plane makes a 60⁰ angle with the axis

Q. Define the intensity of electric field at a point.

Q.

Consider a uniform electric field E = 3 × 10³ îN/C. (a) What is the flux of this field through a square of 10 cm on a side whose plane is parallel to the yz plane? (b) What is the flux through the same square if the normal to its plane makes a 60° angle with the x-axis?

Q. In the discharge tube, cathode rays are found to move along a straight line path. This is possible when:

1. an electric field alone is present
2. a magnetic field alone is present
3. both electric and magnetic fields are present in same direction
4. both electric and magnetic fields are present along perpendicular directions

Q. Assertion :Eddy currents heat up the core and dissipate electrical energy in the form of heat. Reason: Eddy currents are always undesirable.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. Which of the following physical quantity is different form others ?

1. Displacement
2. Kinetic energy
3. Force
4. Velocity

Q. Statement 1: Current has a direction and magnitude so it is a vector.
Statement 2: All vectors obey the parallelogram law of vector addition

1. Statement 1 is correct, Statement 2 is the correct and Statement 2 is the correct explanation for statement 1
2. Statement 1 is correct, Statement 2 is the correct and Statement 2 is not the correct explanation of statement 1
3. Statement 1 is correct but Statement 2 is wrong
4. Statement 1 is wrong but Statement 2 is correct

Q.

what is potential at a point which is at infinite distance from a charge ?

Q.

Which of these are not real vectors?

1. Force
2. Police force
3. Direction of life
4. One Direction

Q. In which direction does the electric potential decreases in an uniformly electrostatic field?

Q. electric potential at certain diatance from point charge is 600v and electric field at same point is 200N/C what is potential at dist. 9 m from the same charge?

Q. The graph shows the behaviour of a steel wire in the region for which the wire obeys Hooke's law.The graph is a part of a parabola. The variables x and y might represent.

1. x $=$ stress ; y $=$ strain
2. x $=$ strain ; y $=$ stress
3. x $=$ elastic energy ; y $=$ strain
4. x $=$ strain ; y $=$ elastic energy

Q. What is the difference between electric potential , potential difference and electromotive force?

Q. Statement 1: Current has a direction and magnitude so it is a vector.
Statement 2: All vectors obey the parallelogram law of vector addition

1. Statement 1 is correct, Statement 2 is the correct and Statement 2 is not the correct explanation of statement 1
2. Statement 1 is correct but Statement 2 is wrong
3. Statement 1 is correct, Statement 2 is the correct and Statement 2 is the correct explanation for statement 1
4. Statement 1 is wrong but Statement 2 is correct

Q.

y is it when V is a const. r is a const 4 potential?

Q.

Which of these are not real vectors?

1. Pressure

2. Current

3. Force

4. velocity

Q. Statement 1: Current has a direction and magnitude so it is a vector.
Statement 2: All vectors obey the parallelogram law of vector addition

1. Statement 1 is correct, Statement 2 is the correct and Statement 2 is the correct explanation for statement 1
2. Statement 1 is correct, Statement 2 is the correct and Statement 2 is not the correct explanation of statement 1
3. Statement 1 is correct but Statement 2 is wrong
4. Statement 1 is wrong but Statement 2 is correct

Q.

Which of these are not real vectors?

1. Pressure

2. Current

3. Force

4. velocity

Q. Assertion :At a point in space, the electric field points towards north. In the region, surrounding this point the rate of change of potential will be zero along the east and west Reason: Electric field due to a charge is in the space around the charge

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Assertion is incorrect but Reason is correct