please help. Thank you!! Does the amount of current through a battery in a circu

Question

please help. Thank you!!

Does the amount of current through a battery in a circuit appear to remain constant or to depend on the number of bulbs in a circuit, and how they are Part 3 Adding More Bulbs 1. n part 1, you have seen that two bulbs arranged in series as in circuit II (bulbs B and C) pictured below both glow dimmer about one-fourth the brightness) than one bulb (bulb A in circuit I). D E F Circuit I Circuit Circuit V Set up circuits I and II, but first make sure the two batteries you use are each equally good at lighting a single bulb. Close the switches to turn on the bulbs only while making your observations. Now add a third bulb to circuit II to make circuit V Record your observations of the relative brightness of the bulbs on the brightness scale below. In recording your observations pay attention to large differences in brightness that you may observe, rather than small differences that could occur if two of the "identical" bulbs are, in fact, not identical. Observations Brightness Scale Not lit "standard very one-bulb bright Lab 16-5

Explanation / Answer

2.

(i) On addition of bulbs the net magnitude of current will decrese in the curcuit but same current will flow through each bulb as they are connected in series.

(ii) the current through the battery will decrease on addition of each bulb in the circuit.

(iii) since by addition of each bulb the net resistance of the circuit is increasing so the current in the circuit will decreaase.

(iv) On addition of more bulbs the net resistance will increase as they are connected in series an equivalent resistance in series is R1 + R2 + R3...

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