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1. State Ohm's law.

2. Explain what is meant by the potential difference between two points in an electric circuit.

A 22 Ω resistor is connected to two dry cells, each with EMF 3 V and internal resistance 1 Ω. Calculate the current through the resistor when:

a. The cells are arranged in series.

b. The cells are arranged in parallel.

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Final answer:

Ohm's Law defines the relationship between current and voltage in a conductor, and potential difference signifies the energy needed to move charge. Calculations show current values in different cell arrangements.


Explanation:

Ohm's Law states that the current flowing through a conductor between two points is directly proportional to the voltage across the two points, given a constant temperature.

The potential difference between two points in an electric circuit refers to the energy required to move a unit charge from one point to another in the circuit.

For the circuit with two dry cells of EMF 3 V and internal resistance 1 each connected to a 2Ω resistor, the current through the resistor is:

  1. When arranged in series: 0.429 A
  2. When arranged in parallel: 1.5 A

Learn more about Ohm's Law and Circuits here:

https://brainly.com/question/3033747


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