The load resistance increases. How will the load current change?
-
vary -
remain constant -
increase -
decrease
A potentiometer has how many leads?
-
1 -
2 -
3 -
4
The six basic forms of energy are:
-
light, sun, magnetic, chemical, electrical, and mechanical -
electrical, mechanical, light, heat, magnetic, and chemical -
electrical, mechanical, sun, heat, chemical, and light -
potential, sun, light, chemical, electrical, and mechanical
Wirewound resistors are usually used in circuits that have:
-
high current -
negative temperature coefficients -
low power -
high voltage
The word work means that:
-
energy has been transferred -
it is inversely related to energy -
no energy has been transferred -
work and energy are not related
Which is the most important step utilized when measuring resistors?
-
use the highest possible scale -
keep test leads short -
zero the meter before using -
remove power from the circuit
Power is measured in units of:
-
joules x charge -
joules/work -
joules x voltage -
joules/time
A resistor with a value of 9.9 k
10% could have a value between 8.91 k and 10.89 k.
-
True -
False
If resistance decreases, then current will:
-
decrease -
increase -
remain the same -
double
Which is the most important step utilized when measuring resistors?
-
use the highest possible scale -
keep test leads short -
zero the meter before using -
remove power from the circuit
If a calculator display was "0.00263," what would this answer be in percent?
-
0.026% -
0.26% -
2.63% -
26.3%
What resistor type is found in SIPs and DIPs?
-
metal film -
wirewound -
metal oxide -
thick film
How do fixed resistors usually fail?
-
slowly over time -
by increasing their value -
by becoming an open circuit -
by increasing their value and becoming an open circuit
How many joules of energy will a 10 W lamp dissipate in one minute?
-
10 joules -
60 joules -
600 joules -
3600 joules
What is the ratio of 13 to 47 expressed in percent?
-
2.76% -
27.7% -
3.60% -
36.1%
What resistor type is found in SIPs and DIPs?
-
metal film -
wirewound -
metal oxide -
thick film
How much energy is stored if 6.24 x 1018 electrons are stored in 4 volts?
-
4 joules -
1.56 x 1018 electrons -
1.56 coulombs -
2.496 x 1019 electrons
How is power dissipated in a resistor?
-
by resistance -
by voltage -
by current -
by heat
How do fixed resistors usually fail?
-
slowly over time -
by increasing their value -
by becoming an open circuit -
by increasing their value and becoming an open circuit
A good fuse will have:
-
zero ohms resistance -
a medium resistance -
a high resistance -
an infinite resistance