alleryStart learning →How is the magnitude of the electric field at a point defined?
AThe charge per unit force
BThe force per unit charge
CThe force per unit length
DThe charge per unit area
Answer & Solution
Correct answer: B. The force per unit charge
1. An electric field is a region of space in which a charge experiences a force.
2. The electric field at a point is defined as the force per unit charge.
3. This makes the field independent of how large the test charge happens to be.
4. The units that follow from this definition are newtons per coulomb.
_Source: Siyavula Physical Sciences Grade 11 (Everything Science, CC BY 4.0), Chapter 9: Electrostatics_
Keep practising Electromagnetism
Browse all Electromagnetism questions for UCE (O-Level), or explore more Physics topics.
Related questions
A uniform magnetic field lies exactly in the plane of a flat wire loop. What is the magnetA bar magnet is held completely still inside a coil that is connected to a sensitive meterMany loops of wire are wound into a cylindrical coil so that the field of each loop adds tWhich rule gives the direction of the magnetic field around a straight wire carrying a curA compass is held close to a wire while a current flows through the wire. What happens to An isolated negative point charge sits alone in space. Which way do its electric field linTwo small spheres both carry negative charge and are held near each other. What do they do