All the bulbs in the three circuits are identical. An ammeter is placed in different locations, as shown. Rank the current readings in the ammeter from highest to lowest. This diagram presents three circuit configurations, labeled A, B, and C, arranged to illustrate the impact of an ammeter on the circuit's position.### Circuit A- **Components:** - Three light bulbs connected in parallel. - An ammeter connected in parallel with the middle light bulb. - A power source at the bottom.- **Description:** The ammeter measures the current flowing through the middle bulb.### Circuit B- **Components:** - Three light bulbs connected in parallel. - An ammeter connected in series with the middle light bulb. - A power source at the bottom.- **Description:** The ammeter measures the total current flowing through the entire circuit.### Circuit C- **Components:** - Three light bulbs connected in parallel. - An ammeter connected in parallel with the uppermost light bulb. - A power source at the bottom.- **Description:** The ammeter measures the current through the top bulb.### Key Points- **Parallel Configuration:** All bulbs receive the full voltage from the supply, offering consistent brightness regardless of the number of bulbs.- **Ammeter Placement:** The placement of the ammeter affects the measurement and interpretation of the current in each circuit section.This illustration aids in understanding how ammeter positioning impacts current measurement in a parallel circuit setup.

The equivalent resistance is same in all three cases , and thus the total current in the circuit is same for all three circuits. Now, since the resistance of each bulb is identical , therefore the total current in the circuit will be divided in three equal parts and thus one third of total current in the circuit would flow through each bulb in each circuit. In this way , the ammeter in each circuit would measure the same current and thus the ranking would be: " A = B = C"The ranking of current measured by ammeter is : "A= B= C" ( as explained above)