Equilibrium, Motion of Charge, Neutral Point and E.P.E.- MCQ-Basic

Equilibrium, Motion of Charge, Neutral Point and E.P.E.- MCQ-Basic

Dear Readers,

Physics is an important subject in preparation for various Competitive exams. To keep a track of your preparation we have designed a small quiz of 10 Basic Level Questions on Equilibrium, Motion of Charge, Neutral Point and E.P.E..You have 10 minutes to solve the quiz, click the start timer button in order to start the timer and then click on submit button at the end to submit the quiz and view your scores and correct answers.

Q1. A bullet of mass 2g is having a charge of 2μC. Through what potential difference must it be accelerated, starting from rest, to acquire a speed of 10 m/s ?

•  50 kV
•  5 V
•  50 V
•  5 kV

50 kV

Q2. Three point charges are placed at the corners of an equilateral triangle. Assuming only electrostatic forces are acting

•  The system can never be in equilibrium
•  The system will be in equilibrium if the charge rotate about the centre of the triangle
•  The system will be in equilibrium if the charges have different magnitudes and different signs
•  The system will be in equilibrium if the charges have the same magnitudes but different signs

The system can never be in equilibrium

Q3. Cathode rays travelling from east to west enter into region of electric field directed towards north to south in the plane of paper. The deflection of cathode rays is towards

•  East
•  South
•  West
•  North

North

Q4. An electron and a proton are kept in a uniform electric field. The ratio of their acceleration will be

•  Unity
•  Zero
•  m_p/m_e
•  m_e/m_p

m_p/m_e

Q5. Two point charges + 9e and + e are at 16 cm away from each other. Where should another charge q be placed between them so that the system remains in equilibrium

•  24 cm from + 9e
•  12 cm from + 9e
•  24 cm from + e
•  12 cm from + e

12 cm from + 9e

Q6. A simple pendulum has a metal bob, which is negatively charged. If it is allowed to oscillate above a positively charged metallic plate, then its time period will

•  Increases
•  Decreases
•  Become zero
•  Remain the same

Decreases

Q7. Consider two point charges of equal magnitude and opposite sign separated by certain distance. The neutral point due to them

•  Does not exist
•  Will be in mid way between them
•  Lies on the perpendicular bisector of the line joining the two
•  Will be closer to the negative charge

Does not exist

Q8. In a uniform electric field a charge of 3 C experiences a force of 3000 N. The p.d. between two points 1 cm apart along the electric lines of force will be

•  10 V
•  30 V
•  100 V
•  300 V

10 V

Q9. An electron enters an electric field with its velocity in the direction of the electric lines of force. Then

•  The path of the electron will be a circle
•  The path of the electron will be a parabola
•  The velocity of the electron will decrease
•  The velocity of the electron will increase

The velocity of the electron will decrease

Q10. If an electron has an initial velocity in a direction different from that of an electric field, the path of the electron is

•  A straight line
•  A circle
•  An ellipse
•  A parabola

A parabola