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Superconductors are used in MRI scanning in medicine.
The resistance of a superconducting material increases below the critical temperature.
The search for superconductors now focuses more on alloys than on elements.
Superconductors can be used to create magnetic fields for Maglev trains.
The unit for potential difference is the joule (J).
Resistance is calculated from the formula R=IV​.
To measure the resistance of a component, an ammeter is connected in parallel.
A voltmeter must be connected in parallel to measure potential difference.
Resistance can be measured directly with a multimeter.
The length of a wire does not affect its resistance.
A resistor\’s resistance remains constant regardless of temperature changes.
Resistance is a measure of how difficult it is for electric current to flow through a material.
Superconductors allow current to flow without any loss of energy.
The I-V characteristic of a diode shows it conducts equally well in both directions.
The critical temperature for superconductors is typically above room temperature.