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Electric current
01
the flow of electric charge
例子
An alternating electric current is commonly used in household wiring systems.
When the switch is closed, electric current flows through the circuit and powers the device.
When the switch is closed, electric current flows through the circuit and powers the device.
The fluctuating electric current induced a magnetic field in the iron core of the transformer.
The scientists used a small electric current to galvanize the isolated frog leg and induce muscle contractions.
