Phy_En_SE2H_Ch1-Electric Current-1

Electric Current

A flow of electric charges; occurs when electric charges flow.

Direct Current (DC)

A type of electric current that maintains the same value and direction over time.

Alternating Current (AC)

An electric current that varies in value and direction over time.

Potential Difference

The difference in electric potential between two points, measured in volts (V).

Oscilloscope

An electronic device used to visualize the electric voltage between two points in a circuit.

Calibration of Oscilloscope

Adjustments made to set the sensitivity for measuring voltage and time on an oscilloscope.

Electromagnetic Induction

The phenomenon of generating electric current by changing magnetic fields.

Electric Energy (E)

The energy delivered by a current driven by a voltage over a specified duration, measured in joules.

Electric Power (P)

The rate at which electric energy is consumed, measured in watts (W) or joules per second (J/s).

Voltage (V)

The electric potential difference between two points, measured in volts.

Charge (Q)

The quantity of electricity that flows in a circuit, measured in coulombs.

Frequency

The number of times a periodic signal repeats in one second, typically used in the context of AC.

Amplitude (Um)

The maximum value of voltage or current in an AC signal.

Energy Formula (E = V.I.t)

The formula representing electric energy in terms of voltage, current, and time.

Unit of Current

Measured in amperes (A).

Unit of Voltage

Measured in volts (V).

Unit of Electric Energy

Measured in joules (J).

Unit of Power

Measured in watts (W) or joules per second (J/s).

Kilowatt-hour (kWh)

A unit of energy equal to the power consumption of 1000 watts over one hour.