73. ssm A battery has an internal resistance of 0.50 Ω. A number of identical light bulbs, each with a resistance of 15 Ω, are connected in parallel across the battery terminals. The terminal voltage of the battery is observed to be one-half the emf of the battery. How many bulbs are connected?

Current is found by adding Rinternal to N parallel resistors.

 

For N parallel identical resistors:

If all resistors are R value

 

 

 

 

 

 

 

 

 

 

 

 

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This page last updated on June 18, 2018