In this post, NEET Questions On Electric Charges And Fields with Answers, we are going to discuss some most important Multiple choice questions on lectric Charges And Fields. The concept of electric field is very much important for students appearing in NEET as physics is one of the subjects and these Electric Charges And Fields …
Find the electric field intensity at 10cm away from a point charge of 100 esu. a) 1 dyne/esub) 10 dyne/esuc) 100 dyne/esud) 9*109 dyne/esu Answer: aExplanation: We know that electric field intensity at r distance from a point charge q is defined as q/r2 in the CGS system. Here q=100 esu, r=10cm. Substituting the value we get E=1dyne/esu. …
V/m is the unit of ______ a) Electric field intensityb) Electric fluxc) Electric potentiald) Charge Answer: aExplanation: E=-dV/dx where E is the field intensity, V is potential and x is distance. Therefore unit of electric field intensity will be unitofpotentialunitofdistance=V/m. Electric flux has unit V*m, V is the unit of electric potential whereas charge has a unit …
What is the dimension of electric field intensity? a) [M L T-2 I-1]b) [M L T-3 I-1]c) [M L T-2 I-2]d) [M L T-3 I] Answer: bExplanation: Electric field intensity is defined as the force on a unit positive charge kept in an electric field. Hence we can simply consider its dimension as the dimension of force / the …
Electric field is a _______ a) Scalar quantityb) Vector quantityc) Tensor quantityd) Quantity that has properties of both scalar and vector Answer: bExplanation: A scalar quantity is a quantity with magnitude only but no direction. But a vector quantity possesses both magnitude and direction. An electric field has a very specific direction (away from a …
Two-point charges q1 and q2 are situated at a distance d. There is no such point in between them where the electric field is zero. What can we deduce? a) There is no such pointb) The charges are of the same polarityc) The charges are of opposite polarityd) The charges must be unequal Answer: cExplanation: If both …
Electric field due to a uniformly charged hollow sphere at a distance of r (where r is greater than the radius of the sphere) is __________ a) Proportional to rb) Inversely proportional to rc) Proportional to r2d) Inversely proportional to r2 Answer: dExplanation: If the total charge of the sphere is q then the electric …
Electric field inside a hollow conducting sphere ______ a) Increases with distance from the center of the sphereb) Decreases with distance from the center of the spherec) Is zerod) May increase or decrease with distance from the center Answer: cExplanation: According to Gauss’s law, if there is no charge inside a closed surface, the field …
The direction of electric field created by a negative charge is ___________ a) Directed outwardsb) Directed towards the chargec) Maybe outwards or towards the charged) Circular in shape Answer: bExplanation: If a unit positive charge is kept near a negative charge, the unit positive charge will be attracted towards the negative charge. That means the …
The amount of force exerted on a unit positive charge in an electric field is known as _____ a) Electric field intensityb) Electric fluxc) Electric potentiald) Electric lines of force Answer: aExplanation: The zone near a charge where its attraction or repulsion force works, is known as the electric field of that charge. Theoretically, it …