AP Physics 2
11.5 Compound Direct Current (DC) Circuits
11.2 Simple Circuits
A student designs a circuit containing an ideal battery of potential difference \(\Delta V\), three identical lightbulbs labeled \(L_1\), \(L_2\), and \(L_3\), and a single switch \(S\). The circuit must satisfy the following two conditions:
I. When switch \(S\) is open, bulb \(L_1\) is lit, and bulbs \(L_2\) and \(L_3\) are unlit.
II. When switch \(S\) is closed, bulbs \(L_2\) and \(L_3\) both illuminate with equal brightness, and the brightness of bulb \(L_1\) remains unchanged.
Which schematic diagram represents a circuit that satisfies both conditions?
I. When switch \(S\) is open, bulb \(L_1\) is lit, and bulbs \(L_2\) and \(L_3\) are unlit.
II. When switch \(S\) is closed, bulbs \(L_2\) and \(L_3\) both illuminate with equal brightness, and the brightness of bulb \(L_1\) remains unchanged.
Which schematic diagram represents a circuit that satisfies both conditions?
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