In the two circuits at right, both batteries are ideal and identical. The two am

Question

In the two circuits at right, both batteries are ideal and identical. The two ammeters are also ideal and identical. The current through ammeter A1 is equal to that through ammeter A2. Resistor R1 has a value of 10 ohm. Below is a qualitatively correct graph of current versus voltage for a small light bulb.. Assume bulbs A and B are identical to this small light bulb. When responding to the next quaton, you may find it helpful to consider the graph below. Is the equivalent resistance of the two-bulb series circuit, greater than, less than, or equal to 20 ohm. The

Explanation / Answer

the equivlent resistance of the two bulb is equal to 20 ohm.

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