# Ohm's law - problems

Ohm's law states that the current through a conductor (or resistor) between two points is directly proportional to the voltage across the two points. Introducing the constant of proportionality, the resistance, it arrives at the usual mathematical equation I = U/R or I=V/R- Resistors

Two resistors connected in series give the resulting resistance 160Ω and 3.9Ω in parallel. Determine the resistance of this resistors. - Resistance

Determine the resistance of the bulb with current 200 mA and is in regular lamp (230V). - Coil as a girl

The electrical resistance of the copper wire coil is 2.0 ohms. What current runs through the coil when the voltage between the terminals is 3.0 V? - Resistance of the resistor

The resistor terminals have a voltage of 20 V and a current of 5 mA is passed through. What is the resistance of the resistor?

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See also more information on Wikipedia.