Worksheetsdad job
Total questions: 30
Worksheet time: 7hrs 17mins
Why dont birds die when they sit on an electric power line?
They arent grounded
arent heavy enough to make a good electrical connection
their feet arent good insulators
none of the above
what Happens when an additional resistor is added in a series with an existing series circuit?
the total circuit current decreases
the total circuit current increases
the voltage drop accros the circuit increases
none of the above
what is the power level that dissipates across a 5 resistor with a 20 Vdc power source?
100 watts
8 watts
80 watts
4 watts
vWhat is the main reason you should not engage in horseplay around high voltage electrical equipment?
you might make one of your friends mad
you might not have time to get your work done
you might cause serious injury to yourself or others
you might get in trouble
what is the effect you may feel called, when two parts of your body touches an energized circuit?
a burning sensation
an electric shock
an electric short
a static discharge
what does, the sum of the voltage drop across the resistors in any series string add up to.
decreases if the source voltage increases
the source voltage
less than the source voltage
greater then the source voltage
what form of ohms law is used to calculate the circuit current where voltage and resistance are wn
I=ER
I=PE
I=PE
I=R/E
I=ER
I=E/R
how is the Multimeter connected when measuring circuit current.
to read only a portion of the circuit current
so that all the circuit current flows through the meter
across the power supply
in parallel with any resistor
what Is the abbreviation for milliampere?
mA
ma
AM
Ma
what do opposite magnetic poles do?
attract each other
repel each other
have no effect on each other
point north
Why are cells or batteries connected in parallel?
to increase current capacity
to decrease current capacity
to increase voltage capacity
to decrease voltage capacity
what is the output of three 1.5 voltage batteries connected in the series aiding configuration?
3.0 volts
3.5 volts
1.5 volts
4.5 volts
what value does resistor with color bands of blue gray and black have?
6.80 at 20% tolerance
680 at 20% tolerance
680 at 10% tolerance
6.80 at 1% tolerance
what will the voltage drop across the series resistor in a series/parallel circuit do If an additional resistor is added across the parallel branch in the source voltage stays the same?
increase
decrease
stay the same
cannot be determined
When will current flow in a series resistive circuit decrease?
circuit resistance stays the same and applied voltage increases
circuit resistance stays the same and applied voltage increases
circuit resistance decreases and applied voltage stays the same
none of the above
circuit resistance increases and applied voltage stays the same
what is the effect in a series parallel circuit when another resistor branch is added in parallel?
overall voltage goes down
overall current goes up
overall voltage goes up
overall current goes down
what is the total resistance of a circuit with the current of 15 MA in the source voltage of 24V
1.2 KO
1KO
1.4KO
1.6KO
which type of circuit is not meggered?
cables
control circuit
motor
none of the above
what value does a resistor with bands of red orange and yellow, red, brown have?
234
34.5
23.4
345
what Is the total power of a circuit using a 20v power supply that has a total current of 250 MA?
0.5w
5w
7w
3w
how much ESD can damage a circuit card?
24000v
500v
250v
3000v
what is the equivalent resistance across the following parallel circuits? R1 R2 R3 are connected in parralel R1 is 200 R2 is 500 and R3 is 1
625
125
greater than 200
depends on applied voltage
625
What is the total power in the following circuit? R1 and R2 are both connected in parralel across a 15v source.they are both 1.5ko resistors
15o mw
300 mw
400 mw
100 mw
What is the total current of a circuit with the power supply that delivers 10 watts and 20 volts?
20ma
500Ma
50Ma
2 A
What is the current of a circuit with the source voltage of 100 V and a resistance of 2.5 KO?
400 mA
250 mA
25 A
40 mA
equivalent resistance of a parrallel circuit
is less then the resistance of the lowest value resistor in the branch
increases if circuit current increases
is greater then the resistance of any branch resistor values
is the sum of the branc resistor values
what does watts dissipated in a series resistive circuit of any type equal?
cannot be determined even if resistance voltage and current are known
source voltage divided by the total current
the power dissipated by all the resistors in the circuit
total current times the total resistance
what does a current equal in parallel circuits?
the sum of the current flowing through each parralel branch
the applied voltage times total circuit inductance
current times voltage
the power dissipated by each resistor
How does the voltage measured across every resistor in a parallel branch work?
it can be calculated using the product over the sum method
it is equal to the sum of voltages accros each resistor.
it is inversely proportional to total circuit resistance
it is the same
how does current in a series resistive circuit behave?
greatest through the higher value resistors
greatest through the lower value resistors
same through all the resistors in the circuit
lowest through the lower value resistors
