Figure 12, shows an electrical circuit including three switches, S1, S2, S3 and three identical lamps L1, L2, L3. A constant potential difference is applied across X and Y.

      

Figure 12, shows an electrical circuit including three switches, S1, S2, S3 and three identical lamps L1, L2, L3. A constant potential difference is applied across X and Y.
lamps4182017817.jpg
i) Other than L1, state the lamp that will light when S1 and S2 are closed.
ii) How does the brightness in L1 in (i) above compare with its brightness when all the switches are closed?
iii) Explain the observation in (ii) above

  

Answers


John
i) L2

ii) L1 is brighter

iii) When the switches are all closed the total resistance is less then
johnmulu answered the question on April 18, 2017 at 09:08


Next: Figure 7 shows the features of a dry cell (Leclanche’s). Use the information in the figure to answer the questions a and b
Previous: Figure 4 shows the cross-section of a dry cell. Use the information on the figure to answer question a) and b)

View More Physics Questions and Answers | Return to Questions Index


Exams With Marking Schemes

Related Questions