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The circuit has four identical batteries and four identical light bulbs. The current in each bulb is IL and the current provided by each battery is IB.

What is the relation between IB and IL and why?

The circuit

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    \$\begingroup\$ Homework question. What did you get and why, then we will help. \$\endgroup\$
    – Passerby
    Dec 4 '16 at 21:01
  • \$\begingroup\$ @Passerby I am 1st class high-school student, and this question is from 2nd class. Using my knowledge i figured that there are more than four conturs and at least IL > IB. But, I don't have the certain knowledge but electronics is my hobby and I am hoping for help from a professional(or at least person with solid knowledge) \$\endgroup\$ Dec 4 '16 at 21:06
  • \$\begingroup\$ Why does IL > IB? \$\endgroup\$
    – Passerby
    Dec 4 '16 at 21:16
  • \$\begingroup\$ I think that one light bulb gets current from more than 1 battery, so IL>IB \$\endgroup\$ Dec 4 '16 at 21:19
  • \$\begingroup\$ Imagine that you have a voltmeter, and you clipped one of the voltmeter wires somewhere in the circuit. Can you predict any of the voltages that you could measure by attaching the other voltmeter wire? \$\endgroup\$ Dec 4 '16 at 21:20
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IB is twice that if IL.

Each battery is in two current loops. Where each bulb is in one current loop. The current splits in half to power each loop.

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