## Tuesday, 20 September 2022

### ELECTRIC POTENTIAL : MCQ ON ELECTRIC POTENTIAL PART 2

Q1 It is possible to have a positively charged body at

• Zero potential
• Negative potential
• Positive potential
• All of these

• All of these

Q2 Electric potential of Earth is taken as zero because Earth is a good......

• Insulator
• Conductor
• Semiconductor
• Dielectric

• Conductor

Q3 In bringing an electron towards another electron, the electrostatic potential energy of the system –

• Increases
• Decreases
• Remains unchanged
• Becomes zero

• Increases

Q4 Two equal and opposite charges +q and –q are situated at x distance from each other, the value of potential at very far point will depend on

• Only on q
• Only on x
• On qx
• On q/x

• On qx

Q5 1 eV = 1.6 x 10^{-19}  (T/F)

• True
• False

• True

Q6 The  potential within and on the surface of a conductor is

•  Zero
• Constant
• Can be zero or constant
• None of these

• Constant

Electric field at any point is equal to the negative of potential gradient. But inside a conductor , Electric field is zero . Hence, electric potential is constant throughout the volume of conductor and has same value on its surface

Q7 The phenomenon of making a region free from any electric field is .

• Gauss theorem
• Corona discharge
• Electrostatic shielding

Electrostatic shielding

The phenomenon of making a region free from any electric field is called electrostatic shielding . It is based on the fact that the electric field vanishes inside the cavity of a hollow conductor

Q8 Which of the following quantity is measured in kelvin?

• Time
• Mass
• distance
• temperature

temperature

Q9 Which of the following is not a fundamental quantity?

• Time
• Mass
• velocity
• temperature

Velocity

Q10 The SI unit of luminous intensity is

• Second
• Candela
• mole
• m/s

Candela