Current
Resistors
Voltage
Capacitors
Miscellaneous
100
These are the charge carriers of an electrical current
What are electrons?
100
If two resistors are placed in series, what is the ratio of R to the equivalent resistance (R/Requiv)
What is 1/2?
100
This is the standard direction of current.
What is from the positive terminal to negative terminal?
100
This is the equivalent capacitance of two 50 Farads in parallel.
What is 100 Farads?
100
These are the units of the time constant RC.
What are seconds?
200
A 9 volt battery has a total resistance of 40 ohms. What is the current within the circuit?
What is 9/40 Amps?
200
If two 5 ohm resistors are in parallel with each other, what is the equivalent resistance?
What is 2.5 ohms?
200
What will a voltmeter read if it is placed in series with the battery and a resistor?
What is 0 V?
200
This is the equivalent capacitance of two 10 Farad capacitors in series.
What is 5 Farads?
200
This is the value of the voltage across a capacitor reaches after roughly 5 time constants pass.
What is the battery's emf?
300
What happens if an ammeter is placed in parallel with a resistor?
There will be a very low resistance and a very high current which will cause damage to the ammeter
300
This is the material that has a resistor with a radius of 4cm, a resistance of 40 micro ohms, and a length of 18 cm.
What is Nichrome?
300
This is the voltage in a real battery if the current is 5 amps, there are three 3 ohm resistors in series, and an internal resistance of 1 ohm?
What is 50 volts?
300
This is the equivalent capacitance.
What is 11.4 micro Farads?
300
Which dissipates more power, A (a circuit with a 20 volt battery and a 10 ohm resistor), or B (a circuit with a 20 amp current and a 10 ohm resistor)?
What is B (a circuit with a 20 amp current and a 10 ohm resistor)?
400
What is the current going through this circuit?
What is 5*10^-4 (or .0005)A?
400
If there is a 9 volt battery, 3 equivalent resistors, and a current of 50 amps, what is the value of a single resistor?
What is .06 ohms?
400
If 1.35 A of current is going across R1 and each of the resistances are equivalent, what is the voltage drop across R1?
What is 12 V?
400
Rank The equivalent capacitance of these circuits
What is C, D, A, B?
400
Two lightbulbs have the same resistance but different voltage. The voltage of the first is 4 volts and the second is 2 volts. What is the ratio of the power dissipated by lightbulb 1 vs lightbulb 2 (P1/P2)?
What is 4?
500
A circuit has one 10 ohm resistor and two 20 micro Farad capacitors (in series) with a voltage of 10 volts. The initial charge on the capacitors is 15 micro coulombs. What is the current after 3 time constants go by?
What is .0423 A?
500
If a charge is decreased to 20% of its initial value and its capacitance is 70 micro Farads, what is the resistance after 6 seconds (2 sig figs)?
What is 53 kilo ohms?
500
How many time constants have to go by in order for the final voltage to be .7% of the supply voltage (or emf) when the resistance is 30 ohms and the capacitance is 20 micro Farads?
What is 5 time constants?
500
Imagine a capacitor with a magnitude of charge Q on either plate. This capacitor has area A, separation distance D, and is connected to a battery of voltage V. If some external agent pulls the capacitor apart such that D doubles, did the charge on each plate increase, decrease or stay the same?
What is decrease?
500
If one kilowatt hour of electricity costs 12 cents, how long would it take a circuit with a 20 A current and a 10 ohm resistor to spend $1 in electricity (in hours)?
What is 3.47 hours?