T5C Ohm's Law (any calculations will be kept to
a very low level - no
fractions
or decimals) and the concepts of energy and power, and;
concepts
of frequency, including AC vs. DC, frequency units, and
wavelength
T5C01
@T5B01
How is
the current in a DC circuit directly calculated when the
voltage
and resistance are known?
A. I = R x E [current equals resistance
multiplied by voltage]
B. I = R / E [current equals resistance divided
by voltage]
C. I = E / R [current equals voltage divided by
resistance]
D. I = E / P [current equals voltage divided by
power]
T5C02
@T5B02
How is
the resistance in a DC circuit calculated when the voltage and
current
are known?
A. R = I / E [resistance equals current divided
by voltage]
B. R = E / I [resistance equals voltage divided
by current]
C. R = I x E [resistance equals current
multiplied by voltage]
D. R = P / E [resistance equals power divided
by voltage]
T5C03
@T5B03
How is
the voltage in a DC circuit directly calculated when the
current
and resistance are known?
A. E = I / R [voltage equals current divided by
resistance]
B. E = R / I [voltage equals resistance divided
by current]
C. E = I x R [voltage equals current multiplied
by resistance]
D. E = I / P [voltage equals current divided by
power]
T5C04
@N5C03
If a
current of 2 amperes flows through a 50-ohm resistor, what is the
voltage
across the resistor?
A. 25 volts
B. 52 volts
C. 100 volts
D. 200 volts
T5C05
@N5C04
If a
100-ohm resistor is connected to 200 volts, what is the current
through
the resistor?
A. 1 ampere
B. 2 amperes
C. 300 amperes
D. 20,000 amperes
T5C06
@N5C05
If a
current of 3 amperes flows through a resistor connected to 90
volts,
what is the resistance?
A. 3 ohms
B. 30 ohms
C. 93 ohms
D. 270 ohms
T5C07
@N5C06
What
term describes how fast electrical energy is used?
A. Resistance
B. Current
C. Power
D. Voltage
T5C08
@N5C08
What is
the basic unit of electrical power?
A. The ohm
B. The watt
C. The volt
D. The ampere
T5C09
@N5D14
What
happens to a signal's wavelength as its frequency increases?
A. It gets shorter
B. It gets longer
C. It stays the same
D. It disappears
T5C10
@N5D03
What is
the name of a current that flows back and forth, first in one
direction,
then in the opposite direction?
A. An alternating current
B. A direct current
C. A rough current
D. A steady state current
T5C11
@N5D01
What is
the name of a current that flows only in one direction?
A. An alternating current
B. A direct current
C. A normal current
D. A smooth current