Chapter 18 - D.C.Circuit Flashcards
Current in a series circuit is not the same, Yes/No
No, same
In a series circuit, the total voltage of the battery or the terminal is equal to ?
The SUM of the voltage of all the bulbs/component
V=V1+V2+V3
In a series circuit, the battery has a voltage of 6V. There are three bulbs in the circuit. How much voltage will each bulb have?
Since V=V1+V2+V3, 6V/3=2V, each bulb receive 2V
In a parallel circuit, the voltage of each bulb is not the same
No, same
In a parallel circuit, the total current of the circuit is equal to ?
the SUM of the current of all the juntions, A=A1+A2+A3
In a parallel circuit, the current of the circuit is 3A. There are three junctions, how much current will each junction receive?
Since A=A1+A2+A3, 3=1+1+1, each junction will receive 1A
In a series circuit, there is 3 resistors of 1Ω each, what is the total resistance of the circuit?
since R=R1+R2+R3, total resistance is 3Ω
In a parallel circuit, there is 3 resistors of 2Ω, each at one junction, what is the total resistance of the circuit?
since 1/R=1/R1+1/R2+1/R3, the total resistance will be 1.5Ω
In a series circuit, there is two resistors, to calculate the voltage of one of the resistor, the equation is V1 = ?
R1/R1+R2 x V (Voltage of the source)
Two resistors are connected in series, R1 = 2Ω, R2=5Ω, will they get the same voltage? If not, which one gets a higher voltage?
R2 get higher voltage
What is Transducers? What does it do?
Transducers are electrical devices that convert energy from one form to another
What are the two types of transducer? What is the difference between them?
Input transducer and Output transducer.
Input transducer convert non-electrical energy to electrical energy
Output transducer convert electrical energy to non-electrical energy
What are the examples of Input transducer and output transducer?
Input transducer: Thermister and Light-dependent resistor
Output transducer: Loudspeaker
A thermistor is a resistor whose resistance is affected by ____. When ______ increases, resistance ____.
Temperature, Temperature, Decrease
A Light-Dependent Resistor (LDR) is a resistor whose resistance is affected by _____. When ______ is presented, the resistance ________
Light, Light, Decrease
A resistor is connected to a series circuit. After that, a copper wire is connected to the circuit, making it a parallel circuit. How would the current flow through the circuit now? And why?
The current will flow through the copper wire instead because it is a short circuit.
in a parallel circuit, there are two resistors, 1Ω and 4Ω respectively. The total current is 2A, how much current pass through the 1Ω resistor? Think of the current divider formula to solve
Since Current1= Current (Total) X R1/R1+R2, The current pass through 1Ω resistor is 0.40A
Initially, in a parallel circuit there are 3 identical bulbs, later on, one bulb is removed from the circuit, what will happen to the brightness of the bulb as well as the total current of the circuit?
Brightness; Unchanged
Current: Decrease
