Electric field is given by E . Find the potential difference between x= 10 and x= 20 m. [This question includes concepts from 12th syllabus]
1. 5 V
2. 10 V
3. 15 V
4. 20 V
The figure shows some of the equipotential surfaces. Magnitude and direction of the electric field is given by
1. 200 V/m, making an angle with the x-axis
2. 100 V/m, pointing towards the negative x-axis
3. 200 V/m, making an angle with the x-axis
4. 100 V/m, making an angle with the x-axis
The electric potential V at any point O (x, y, z all in metres) in space is given by . The electric field at the point in volt/metre is -
(1) 8 along negative x-axis
(2) 8 along positive x-axis
(3) 16 along negative x-axis
(4) 16 along positive z-axis
Electric potential at any point is , then the magnitude of the electric field is
(1)
(2)
(3)
(4) 7
If potential (in volts) in a region is expressed as V(x,y,z)=6xy-y+2yz, the electric field (in N/C) at point (1,1,0) is
(1)-(3+5+3)
(2)-(6+5+2)
(3)-(2+3+)
(4)-(6+9+)
In a region, the potential is represented by V(x,y,z)=6x-8xy-8y+6yz, where V is in volts and x,y,z are in meters. The electric force experienced by a charge of 2 coulomb situated at point (1,1,1) is
(1)6√5N
(2)30N
(3)24N
(4)4√35N
\(\mathrm{A}\), \(\mathrm{B}\) and \(\mathrm{C}\) are three points in a uniform electric field. The electric potential is:
1. | maximum at \(\mathrm{A}\) |
2. | maximum at \(\mathrm{B}\) |
3. | maximum at \(\mathrm{C}\) |
4. | same at all the three points \(\mathrm{A},\mathrm{B} ~\text{and}~\mathrm{C}\) |
The electric potential at a point (x,y,z) is given by
The electric field at that point is
(a)
(b)
(c)
(d)
The mean free path of electrons in a metal is The electric field which can give on an average 2 eV energy to an electron in the metal will be in a unit of :
(1)
(2)
(3)
(4)
A non-conducting ring of radius 0.5 m carries a total charge of 1.11 × 10–10 C distributed non-uniformly on its circumference producing an electric field everywhere in space. The value of the line integral being centre of the ring) in volt is
(1) + 2
(2) – 1
(3) – 2
(4) Zero