MCQOPTIONS
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MCQOPTIONS
This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
+q charges are placed at the points (1, 0), (2, 0), (4, 0), (8, 0) . (up to infinity). What is the potential at the origin due to these charges? |
| A. | ( frac {2q}{3} ) |
| B. | 2q |
| C. | ( frac {q}{3} ) |
| D. | Infinity |
| Answer» C. ( frac {q}{3} ) | |
| 2. |
What is the potential energy at the center of an equilateral triangle if +5esu, +5esu and -10esu are placed at the corners of the triangle? The triangle has a side length of 3cm. |
| A. | 20V |
| B. | 5V |
| C. | ( frac {5}{3} )V |
| D. | 0V |
| Answer» E. | |
| 3. |
If three equal charges are placed at the corners of an equilateral triangle, the potential at the center of the triangle will be zero. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
Four point charges 2*10-9C, 1*10-9C, -2*10-9C, 3*10-9C are placed at the corners of a square of side length 2m. What is the electric potential at the center of the square? |
| A. | 36V |
| B. | -36V |
| C. | 2*10<sup>-9</sup>V |
| D. | Zero |
| Answer» B. -36V | |
| 5. |
+q charges are placed at a, 3a, 5a (up to infinity) and q charges are placed at 2a, 4a, 6a .. (up to infinity). What is the total potential energy at origin (0, 0)? |
| A. | Zero |
| B. | ( frac {q}{a} ) |
| C. | ( frac {(q , log2)}{a} ) |
| D. | ( frac {qe^2}{a} ) |
| Answer» D. ( frac {qe^2}{a} ) | |
| 6. |
The work done to move a charge of 20C by a distance of 2cm is 2J. What is the potential difference between those two points? |
| A. | 1V |
| B. | 0.1V |
| C. | 10V |
| D. | 20V |
| Answer» C. 10V | |