MCQOPTIONS
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MCQOPTIONS
This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following devices is the more accurate one for the measurement of emf? |
| A. | Meter Bridge |
| B. | Voltmeter |
| C. | Multimeter |
| D. | Potentiometer |
| Answer» E. | |
| 2. |
A cell has an emf of 6V, internal resistance of 1 ohms and a current of 0.5 A passing through it. This cell is connected to a resistor. Find out the resistance of the resistor. |
| A. | 10 ohms |
| B. | 11 ohms |
| C. | 12 ohms |
| D. | 13 ohms |
| Answer» C. 12 ohms | |
| 3. |
A current of 3 A passes through an electric circuit for 5 minutes and does a work of 900J. What is the emf of the source? |
| A. | 3V |
| B. | 1V |
| C. | 5V |
| D. | 10V |
| Answer» C. 5V | |
| 4. |
Identify the correct statement from the following about discharging of a cell. |
| A. | The direction of current in the cell is from positive to negative terminal |
| B. | Terminal potential difference is greater than emf of the cell |
| C. | Terminal potential difference is lesser than emf of the cell |
| D. | The current increases and decreases frequently |
| Answer» D. The current increases and decreases frequently | |
| 5. |
The emf of a cell depends upon concentration of the electrolyte. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
Which is the factor that internal resistance does not depend on? |
| A. | Distance between the electrodes |
| B. | Temperature of the electrolyte |
| C. | Nature of electrode and electrolyte |
| D. | Area of the electrode, immersed in the electrolyte |
| Answer» C. Nature of electrode and electrolyte | |
| 7. |
Pick out the dimensional formula of emf from the following. |
| A. | [M<sup>1</sup>L<sup>2</sup>T<sup>3</sup>A<sup>1</sup>] |
| B. | [ML<sup>3</sup>T<sup>3</sup>A<sup>1</sup>] |
| C. | [M<sup>2</sup>L<sup>2</sup>T<sup>1</sup>A<sup>-1</sup>] |
| D. | [ML<sup>2</sup>T<sup>-3</sup>A<sup>-1</sup>] |
| Answer» E. | |
| 8. |
Which of the following is the correct statement regarding electrochemical cell? |
| A. | It converts chemical energy to electrical energy |
| B. | It converts electric energy to chemical energy |
| C. | It converts chemical energy to thermal energy |
| D. | It does not maintain the flow of charge in a circuit |
| Answer» B. It converts electric energy to chemical energy | |