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☆☆☆☆☆Cards in this guide (10)
What unit is used to measure resistance
ohm
A transformer has 150 turns on the primary coil and is connected to a 120 volt power source How many turns will be needed on the secondary coil to provide a secondary voltage of 40 volts
fifty turns
A string of 15 Christmas tree lights is connected in series to a 90 volt power source What is the value of the resistance of each light if the current flowing through the circuit is 2 amps
3
3 ohms
The apparent change in the frequency of a sound emitted by a moving object as it passes a stationary observer is called the what effect
Doppler effect.
How current passes through resistor.
- What is the current running through resistor four?1 amps..!
- What is the current running through resistor one? 3 amps...!
- What is the current running through resistor three? 2amps..!
- What is the current running through resistor five? 3 amps..!
- What is the voltage drop running through resistor five? 45 volts...!
- What is the equivalent resistance through the parallel portion of the circuit? 6 ohms
Answer
A resistor is a conductor, albeit one with a higher resistance than a length of wire, so current passes through it without any problem. The magnitude of the current will, of course, be somewhat lower because of the additional resistance.
A string of 20 Christmas tree lights are connected in series to a 20 volt power source The bulbs each have a resistance of .5 ohm How much current is flowing through the circuit
2 amps. If it is D.C.
Five resistors are connected together in series One resistor is 2 ohms one is 3 ohms one is 4 ohms one is 5 ohms and the fifth is 6 ohms What is the total resistance
Purely additive. 2+3+4+5+6=20.
The total current that flows through a circuit is the same as the current that flows through each individual resistor connected in series
True
A pulley system is used to lift a 2000 newton engine up a distance of 3 meters The operator must apply a force of 250 newtons to the chain of the pulley system to lift the motor To lift the engine fi
250 newtons
A+ Answers
What is the total current flowing through a 45 ohm resistor 1.4 amps and 20 ohm resistor 1.8 amps
Just add the amps (3.2 amps).
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