Units
Series & Parallel
Power Problems
Equivalent Resistance
Ohms Law Problems
100
Units for voltage.
Volts
100
In a series circuit, all the resistors have the same _______________.
current
100
How much power does a 120 V microwave use when operated at 10 Amps?
1200 Watts
100
Find the equivalent Resistance of the following
1000 ohms
100
A 9 V battery is connected to a 3 ohm resistor. What is the current in the circuit?
3 Amps
200
Unit of charge.
Coulombs
200
In a parallel circuit, all the resistors have the same _______________.
Voltage
200
How much power does a microwave use when run with 10 Amps and it has a resistance of 20 ohms?
2000 Watts
200
Find the equivalent resistance:
25.7 ohms
200
A 10 ohm resistor has 2 Amps of current running through it. What is the voltage of the battery?
20 Volts
300
Units for power.
Watts
300
In a series circuit, you find equilivant restance by ...
Adding up all the individual resistors.
300
How much power does a 120 volt microwave use if it is operated at 20 ohms?
720 Watts
300
Using 2 ohm resistors, create an equivalent resistance of 0.5 ohms.
4 resistors in parallel
300
If a circuit has a current of 2 Amps and you connect another resistor (in series), would the current increase or decrease? Why?
Decrease, more resistance lowers the current in the circuit.
400
Units for resistance
Ohms
400
In a parallel circuit, you find equilivant restance by ...
Adding the inverse of each resistor and flipping the final answer.
400
A 100 watt light bulb, 1000 watt space heater, 200 watt tv and 400 watt computer are connected to a standard 120 V outlet. If the circuit is connected to a 10 Amp circuit breaker, will the breaker trip?
Yes, 14.2 Amps
400
Find the equivalent Resistance:
12.7 ohms
400
If a circuit has a current of 2 Amps and you connect another resistor (in parallel), would the current increase or decrease? Why?
Increase, adding a resistor in parallel lowers the overall resistance which allows current to flow more freely.
500
Units for current
Amps
500
Which type of connection produces the highest total current?
Parallel
500
A 150 watt light bulb, 1000 watt space heater, 200 watt tv and 400 watt computer are connected to a standard 120 V outlet. If the circuit is connected to a 15 Amp circuit breaker, will the breaker trip?
No, 14.5
500
Find the equivalent resistance:
128.8 ohms
500
200 C of charge flows through a 10 ohm resistor in 40 seconds. What is the voltage of the battery?
50 V