Electric Field Quiz

What is the primary characteristic of electric forces?

• They require physical contact
• They can act through space
• They only act on charged objects
• They are always attractive

Who developed the concept of a field in terms of electric fields?

• Coulomb
• Faraday
• Newton
• Maxwell

How is the electric field defined mathematically?

• E = F/q
• E = q/F
• E = F × q
• E = q/F²

What happens to the electric field if a test charge is removed from a region where an electric field exists?

• The electric field disappears
• The electric field remains
• The electric field reverses direction
• The electric field doubles

What is the SI unit of electric field strength?

• Coulomb
• Newton
• Volt
• N/C

If a positive test charge is placed in an electric field, in what direction does it experience force?

• Opposite to the field direction
• In the same direction as the field
• Perpendicular to the field
• No force is experienced

In the case of a positive point charge, how do the electric field lines behave?

• They radiate inward
• They radiate outward
• They form closed loops
• They are parallel lines

What is the effect on the electric field at point P if a test charge of -3 μC replaces a test charge of +3 μC in an existing electric field of 4 × 10⁶ N/C directed to the right?

• It is unaffected
• It reverses direction
• It changes in a way that cannot be determined
• It doubles in magnitude

What does the density of electric field lines indicate?

• The direction of the field
• The strength of the field
• The type of charge
• The distance from the charge

For a dipole, how do the electric field lines behave?

• They radiate outward from both charges
• They terminate on the positive charge
• They are equal in number leaving and entering the charges
• They are parallel lines