ELE 100-Quiz 3
Unit of power
Watts
unit of energy
joules
Electric companies base their bills on the unit called
kilowatt-hour
If you measured your body resistance while your palms were damp, your ohmmeter would get a _________________ reading than if measured with your palms dry
lower
It takes less than 1 A of current to kill you if it travels through your heart.
true
Unit of voltage
volts
A series circuit contains five resistors. The total resistance for the circuit is 186Ω. The values of four of the resistors are:20Ω,14Ω,10Ω and 100Ω. What is the value of fifth resistor?
42 ohms
What is the current flowing in a 20Ω resistor, when the voltage E=120Volts?
6 amps
If you have two 3000 ohm resistors in series, what is the total resistance?
6 k ohms
Voltage sources cannot be added in series if they equal values and same polarities
False
A circuit has 3.2 A and 110 V. Determine its power.
352 watts
A voltage of 9V is placed across a 27 Ω resistor. What is the value of the current flowing through it?
0.33 amps
How much current flows in a circuit with a 1.5-volt battery and three 1 ohm resistances (bulbs) in series?
0.5 A
If 5 V and 16 V power supplies are connected in series-opposing, what is the total voltage?
11 V
Current through a 100 Ω resistor that is to be used in a circuit is 0.15 A. What is the power being absorbed by the resistor?
2.25 watts
If you were to place a 3000 Ω resistor across a 9 volt battery, what would be the power dissipated from this resistor?
27 mW
Which law is described by the following equation: V or E = I x R?
Ohm's law