Homework Activity Guide 22 5 Refer to the circuit shown to the right. In this \"

Question

Homework Activity Guide 22 5 Refer to the circuit shown to the right. In this "ideal" circuit, the battery has no internal resistance so that it maintains a constant potential difference between its terminals at points 1 and 2 regardless of how much current flows through it. (a) What happens to the brightness of each of the three bulbs if a fourth bulb, D, is connected in parallel with bulb B (not in parallel with B and C). Include a sketch of the circuit with bulb D in place. (b) What happens simultaneously to the current through point 3? (c) What happens simultaneously to the potential difference between points 3 and 4? (d) What happens simultaneously to the potential difference between points 4 and 2? 2

Explanation / Answer

a)Brightness of bulb A will remain unaffected as potential difference across it will remain same

Brightness of C will increase since potential difference across it will increase than it was earlier

Brightness of B will decrease as potential diffrence across it will reduce than it was earlier

b) current through point 3 will increase as net resistance has decreased.

c) potential difference between point 3 and point 4 will decrease.

d) potential difference between point 4 and 2 will increase

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