MCQOPTIONS
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MCQOPTIONS
This section includes 3 Mcqs, each offering curated multiple-choice questions to sharpen your Physics Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A cell has an emf ‘e’ and internal resistance ‘r’ and is connected across a variable external resistance R. Identify the correct plot from the following of potential difference across resistance R when R is increased. |
| A. | a) |
| Answer» C. | |
| 2. |
‘n’ cells have emf ‘e’ and internal resistance ‘r’ and connected to an external resistance ‘R’. They pass the same current whether the cells are connected in series or in parallel to each other. Then which of the following conditions are true? |
| A. | R = r |
| B. | r = nR |
| C. | R = nr |
| D. | R = n2r |
| Answer» B. r = nR | |
| 3. |
What will be the grouping of cells when the current in the circuit is \(\frac {ne}{(R + nr)}\)? |
| A. | Parallel grouping |
| B. | Series grouping |
| C. | Mixed grouping |
| D. | When there is no grouping |
| Answer» C. Mixed grouping | |