An automobile battery has an emf of 12.6 V and an internal resistance of 0.0830 Ω. The headlights together have an equivalent resistance of 5.70 Ω (assumed constant). (a) What is the potential difference across the headlight bulbs when they are the only load on the battery? (Enter your answer to at least two decimal places.) (b) What is the potential difference across the headlight bulbs when the starter motor is operated, with 35.0 A of current in the motor? (Enter your answer to at least two decimal places.)
Ohm's law
Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.
Path of Least Resistance
In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.
An automobile battery has an emf of 12.6 V and an internal resistance of 0.0830 Ω. The headlights together have an equivalent resistance of 5.70 Ω (assumed constant).
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