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- Basics Concepts of Thermodynamics
- Zeroth Law of Thermodynamics
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Electrostatics
Question 1
Coulomb's Law gives the force between:
- A
Two masses
- B
Two charges
- C
Two currents
- D
Two electric fields
Question 2
The unit of electric charge is:
- A
Ampere
- B
Volt
- C
Coulomb
- D
Tesla
Question 3
The electric field at a point due to a positive charge is:
- A
Radially inward
- B
Radially outward
- C
Zero everywhere
- D
Circular
Question 4
The electric potential at a point is defined as:
- A
The force per unit charge
- B
The energy per unit charge
- C
The charge per unit energy
- D
The energy per unit mass
Question 5
The potential energy of a system of two point charges is:
- A
Always positive
- B
Always negative
- C
Positive if the charges have the same sign, negative if they have opposite signs
- D
Independent of the charges’ positions
Question 6
The electric field inside a conductor in electrostatic equilibrium is:
- A
Zero
- B
Maximum
- C
Constant
- D
Varies with distance
Question 7
The electric flux through a surface is defined as:
- A
The electric field times the charge enclosed
- B
The electric field multiplied by the area perpendicular to the field
- C
The charge on the surface
- D
The potential difference across the surface
Question 8
The electric flux through a surface is defined as:
- A
The electric field times the charge enclosed
- B
The electric field multiplied by the area perpendicular to the field
- C
The charge on the surface
- D
The potential difference across the surface
Question 9
If the distance between two charges is doubled, the electrostatic force between them becomes:
- A
Half
- B
One-quarter
- C
Double
- D
Four times
Question 10
A capacitor is charged with a potential difference of 10 V. If the capacitance of the capacitor is 2 μF, the charge on the capacitor is:
- A
10 μC
- B
20 μC
- C
2 μC
- D
5 μC
There are 10 questions to complete.