Your old car battery with an emf of 7.3 V and internal resistance of 0.5 ohm dies out and won’t let the car’s engine start. The starter motor with resistance of 2 ohm won’t turn over. You borrow a friend’s new car’s live battery with emf of 12.5 V and internal resistance of 0.1 ohm and connected it in parallel to your car’s dead battery to recharge and start the car’s engine. As the dead battery recharges, current from the live battery (ILB) is passed through the dead battery (IDB) and the starter motor, (ISM). Use Kirchhoff’s Laws to find the values of these three (3) currents.
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.
Your old car battery with an emf of 7.3 V and internal resistance of 0.5 ohm dies out and won’t let the car’s engine start. The starter motor with resistance of 2 ohm won’t turn over. You borrow a friend’s new car’s live battery with emf of 12.5 V and internal resistance of 0.1 ohm and connected it in parallel to your car’s dead battery to recharge and start the car’s engine. As the dead battery recharges, current from the live battery (ILB) is passed through the dead battery (IDB) and the starter motor, (ISM). Use Kirchhoff’s Laws to find the values of these three (3) currents.
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