25 Answered Questions for the topic Circuits
What is the voltage drop across R1?
What is the voltage drop across R1 if a series circuit has a battery with an emf of 1.5 V and an internal resistance of 3.0 Ω R2 is 8.0 Ω R3 is 6.0 Ω Also, how do I calculate the terminal voltage... more
What is the resistance of R3 and the current of the circuit if this is series?
The voltage provided by the battery is 100 V and the resistance of R1 is 20 Ω, the resistance of R2 is 60 Ω, and the voltage drop across R1 is 10 V.
A radio operates by means of a 9.0-V battery that supplies it with a 50.0-mA current
A radio operates by means of a 9.0-V battery that supplies it with a 50.0-mA currenta)If the cost of the battery is $2.49 and it lasts for 300.0 h, what is the cost per kWh to operate the radio in... more
In the Circuit below the voltmeter V draws negligible current and the internal resistance of the battery is 1.0 ohm
In the Circuit below the voltmeter V draws negligible current and the internal resistance of the battery is 1.0 ohm Please show work! Sorry I could not paste the diagram. v=12.0, there are also 3.0... more
Two resistors have resistances R1 and R2. When the resistors are connected in series to a 12.0-V battery, the current from the battery is 2.00 A.
Two resistors have resistances R1 and R2. When the resistors areconnected in series to a 12.0-V battery, the current from the battery is2.00 A. When the resistors are connected in parallel to the... more
Calculate the resistance when 9.1 A of current flow when connected to a 14.1 volt battery.
need the answer
how much energy does a 56 ohm light use in 8.1 minutes when hooked up to a 120 V outlet?
I am confused on what steps to take and how to solve this problem. how much energy does a 56 ohm light use in 8.1 minutes when hooked up to a 120 V outlet?
find the potential difference when the current is 0.2 amps and the resistance is 30
i just need help finding the andswer to this question could ypu help
The three incoming currents at a node in an electrical circuit measure 0.7 amps, 0.68 amps, and 0.47 amps. Two of the three outgoing currents measure 0.8 amps..
...and 0.55 amps. Find the measure of the third outgoing current
Capacitors in Combination-Find Each Charge
C1 and C2 are capacitors in parallel. C3 is in series with C12. C1=16.6 microF, C2=8.2 microF, C3=0.3 microF. A 1.52 V battery is connected in this combination. Find the charge stored on each... more
effect of current on resistance in series
effect of current on resistance in series graphical explaination
time elapsed in an LR circuit
An LR circuit having time constant of 50 ms is connected with an ideal battery of emf E . prove that the time elapsed before the power dissipated in heat reaches half its maximum value is 61ms
graph of V and R
A cell of emf E having an internal resistance r is connected to an external resistance R . The potential difference V across the resistance R varies with R as shown in figure by which... more
total heat produced in capacitance
In the given circuit , all the capacitor are initially uncharged . After closing the switch S1 for a long time suddenly S2 is also closed for a long time . Then show that total heat produced after... more
readings in ammeter
In the given circuit the ammeter A1 and A2 are ideal and ammeter A3 has a resistance 1.9 x 10-3 . Then show that reading from ammeter are 82/27 , 34/27 & 0 respectively . The circuit is on... more
rate at which energy is delivered in a rc circuit
A 3 mega ohm resistor and an uncharged 10^(-6) F capacitor are connected in a single loop circuit with a constant source of 4 volt . Show that at one second after the connection is made , the rate... more
A resistor is placed in a circuit. The current in the circuit is 2 amperes and the voltage drop across the resistor is 8 volts. The voltage is then increased to 12 volts. What will be the new... more
Current in a resistor? Resistance?
a. What is the current in a 40.0 Ω resistor that has a voltage drop of 14.0 V across it?b. What is the equivalent resistance of a 3.0 Ω resistor, a 6.0 Ω resistor, and a 4.0 Ω resistor connected in... more
Parallel Circuits pt. 2
How would a parallel circuit impact four identical light bulbs that were plaed in parallel with a six-volt battery? Explain what would happen please.
Physics Question: Generating Electricity
Electrical appliances plug into the wall with a single plug, but a plug has at least two prongs (sometimes there is a third one, but the minimum is two). Why do you think that this is the case?... more
a 52 v battery powers a pair of 36 ohm resistors connected in parallel. what is the current flowing through the system?
round to the nearest 10th
physics question hard??
Two light circuits with identical lightbulbs. One has two lightbulbs in parallel. Other has them in series.Student 1 says series will glow brighter cuz the same current goes to both... more
A circuit with a 100 ohm resistor, followed by a parallel wiring with two 100 ohm resistors. What happens to the potential difference along a parallel resistor if the other one is removed.
Analyzing a curcuit
I've been taking an online course in electronics (basic), and I've been having a hard time solving this circuit, pic: http://bit.ly/1rlDP1V The goal is to find value of v3, i5, power dissipated... more
Differential Equations circuit homework problem
Attached is the problem from my text book. I'm confused about what I'm actually solving and how to use what I know. I know that Current for the inductor is given by the equation di/dt = v/L and the... more