Ohm's law - problemsOhm'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
Two resistors connected in series give the resulting resistance 160Ω and 3.9Ω in parallel. Determine the resistance of this resistors.
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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