NCCER Electrical module 3 (intro to
electrical circuits)
a circuit has a source voltage of 50v and a current of 10A, what is the power in watts? - ANS 500w
voltage is defined as the? - ANS driving force that makes current flow in a circuit
K
if a circuit has 12 amps of current and the resistance is 20 ohms, the applied voltage is? - ANS 240 volts
C
if two 10 ohm resistors are connected in series, what is the total resistance of the resistors? - ANS 20
ohms
LO
to make sure the voltage is turned off before touching any terminals, use a? - ANS voltage tester
how many amos are there in the current of a circuit if the voltage source is 140v and the resistance is 2
omhs - ANS 70
YC
materials with electrical characteristics that fall between those of insulators and conductors are
considered? - ANS semiconductors
what is the applied voltage if the current in a circuit is 60 amps and the resistance is 10 ohms - ANS 600
volts
D
which of the following is used to step voltage down to lower levels before it reaches a home or office? -
ANS transformers
U
a 5ohm and 20 ohm resistor are connected in parallel, what is the total resistance of these two resitors? -
ANS 4 ohms
ST
if the resitors of a circuit is 20 ohms and the current is 10 amps, the power in watts is? - ANS 2500 watts
if a circuit has 48 amps of current and applied voltage of 240 volts, the resistance is? - ANS 50 ohms
you would measure resistance with a? - ANS ohm meter
which of the following substances is considered a good semiconductor. - ANS silicon
in a parallel circuit, the voltage drop? - ANS is the same across all loads
an electronic repels? - ANS other electrons
electrical circuits)
a circuit has a source voltage of 50v and a current of 10A, what is the power in watts? - ANS 500w
voltage is defined as the? - ANS driving force that makes current flow in a circuit
K
if a circuit has 12 amps of current and the resistance is 20 ohms, the applied voltage is? - ANS 240 volts
C
if two 10 ohm resistors are connected in series, what is the total resistance of the resistors? - ANS 20
ohms
LO
to make sure the voltage is turned off before touching any terminals, use a? - ANS voltage tester
how many amos are there in the current of a circuit if the voltage source is 140v and the resistance is 2
omhs - ANS 70
YC
materials with electrical characteristics that fall between those of insulators and conductors are
considered? - ANS semiconductors
what is the applied voltage if the current in a circuit is 60 amps and the resistance is 10 ohms - ANS 600
volts
D
which of the following is used to step voltage down to lower levels before it reaches a home or office? -
ANS transformers
U
a 5ohm and 20 ohm resistor are connected in parallel, what is the total resistance of these two resitors? -
ANS 4 ohms
ST
if the resitors of a circuit is 20 ohms and the current is 10 amps, the power in watts is? - ANS 2500 watts
if a circuit has 48 amps of current and applied voltage of 240 volts, the resistance is? - ANS 50 ohms
you would measure resistance with a? - ANS ohm meter
which of the following substances is considered a good semiconductor. - ANS silicon
in a parallel circuit, the voltage drop? - ANS is the same across all loads
an electronic repels? - ANS other electrons
