If bulbs A and B are identical, predict how the potential difference (voltage) a

Question

If bulbs A and B are identical, predict how the potential difference (voltage) across bulb A in Figure 3.6 will compare to the potential difference across the power supply. How about bulb B?

A) VA = VB = Vpower supply because current in all branches of parallel connection is the same and A and B are identical

B) VA = VB = Vpower supply and VA = VB because A and B are identical

C) VA = VB = Vpower supply regardless of the resistance of A and B because A and B are connected to the same points across the power supply

D) VA+VB = Vpower supply and VA > VB because A is closer to the power supply

E) VA < VB < Vpower supply because actual electron current flows from negative terminal to positive and the voltage drops along the current path

Explanation / Answer

C) VA = VB = Vpower supply regardless of the resistance of A and B because A and B are connected to the same points across the power supply.

Va = Vb = Vsupply, because when the resistors are connected in parallel combination they have same potential drop across them.

[There is no statement directly stating this but C looked the most appropriate of all].

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