Current
The unit for current.
What is ampere?
The prime mover in an electrical system.
What is voltage?
Two types of electric current.
What are AC & DC?
How often a pattern repeats itself.
What is frequency?
The frequency of an electric wave is 70 Hz. What is the period of the wave for 1 cycle?
0.014 seconds
The symbol for current.
What is I?
Units for charge.
What are coulombs?
Flows from the negative electrode to the positive.
What is DC?
Units of frequency.
What is hertz?
A generator produces a signal that has 540 cycles in 9 seconds. What is the frequency of the signal?
60 Hz
Equation for electric current
What is I = Q/t?
Measures the potential difference across a circuit.
What is a voltmeter?
Used in homes and businesses.
What is AC?
The time it takes for a pattern to repeat.
What is period?
The period of an electrical wave for 1 cycle is 0.67 sec. What is the frequency?
15 Hz
An instrument that measures current through a circuit.
What is an ammeter?
Units used for time in equations.
What are seconds?
Flows both ways alternately, with electrons constantly changing directions.
What is AC?
Units for period.
What are seconds?
A charge of 80 C flows for 20 sec. What is the current?
4 Amps
The "Q" in the current equation.
What is charge?
Units for voltage.
What are volts?
Suffers from substantial voltage decay over long distances.
What is DC?
Equation for frequency
What is f = n/t?
The current in a motor during operation for 10 sec is 5 amps. How much charge flows across the motor?
50 C