ELE 100 Quiz 3
A 120 Ω and a 40 Ω resistor are in parallel. What is the equivalent resistance?
30 Ω
How much current flows in a circuit with a 18V battery and six 1 ohm resistors in series?
3A
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 Ω
What is the voltage drop across each resistor in the circuit show here?
4V, 6V, 2V
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 kΩ
Electric companies base their bills on a unit called the
Kilowatt-hour
How will an open resistor affect a series circuit?
No current will flow in the circuit
Which law is described by the following equation: V or E = I x R?
Ohm's Law
Given a series circuit containing resistors to different vales, which statement is not true?
The voltage drop across each resistor is the same
A series network of resistors used to provide different voltages from a single source of energy is called a
Voltage divider
Unit of power is
Watts
If you were to place a 3000 Ω resistor across a 9 volt battery, what would be the power dissipated from this resistor?
27mW
What is the current flowing in the circuit shown here?
2A
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 1ohm resistances (bulbs) in series?
0.5A
If 5V and 16V power supplies are connected in series-opposing, what is the total voltage?
11V
If the first resistor opens in the circuit of problem #10, what will the total current be?
128mA
if you have 3000 ohms resistors in series what's the total resistance
12kOhms
What is the total current in the circuit shown here?
170mA
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
What is the total resistance of the circuit shown below?
2.5Ω
What determines if resistor connections are in series, parallel or series-parallel?
Current Flow
If the resistance in a circuit decreases while the voltage stays the same, what happens to the current?
Current increases
The total resistance in a parallel circuit is always greater than the lowest-value branch resistor
False
In a series connected circuit with 100 Christmas bulbs, if one bulb burns out what happens to the remaining bulbs
all bulbs turn off
as additional resistors are connected to a parallel circuit the total resistance will
decrease
While putting three 1.5V batteries into a flashlight, you put one in backwards. The flashlight will be
dimmer than normal
Resistors connected in a series do not share the same current
false
What happens to the total resistance in a circuit with parallel resistors if one of them opens
it increases
Unit of energy
joules
A parallel circuit differs from a series circuit in that a parallel circuit has_________
more than one path for current flow
Voltage sources can be added in parallel only if they equal values and same polarities.
true
The voltage across any branch of a parallel circuit
varies as the total current varies
