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25 Answered Questions for the topic Circuits

Circuits Physics

6d

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
Circuits Physics

6d

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.
Circuits Physics

6d

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
Circuits Physics Physics 11

7d

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
Circuits Physics Electricity

10/30/19

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
Circuits

05/22/18

Calculate the resistance when 9.1 A of current flow when connected to a 14.1 volt battery.

need the answer
Circuits

04/14/18

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?
Circuits

01/14/18

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
Circuits Measurement

08/30/17

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
Circuits Physics Physics B

03/17/17

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  
Circuits Power

10/01/16

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
Circuits

07/11/16

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
Circuits

07/11/16

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
Circuits

07/11/16

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
Circuits

07/10/16

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
Circuits Physics Current

06/05/16

New Current..?

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
Circuits Physics Electricity

05/23/16

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
Circuits Physics Parallel

05/12/16

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.
Circuits Physics Electricity

05/04/16

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
Circuits Physics Series

05/22/15

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
Circuits Physics Circuit

05/19/15

physics question????

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.
Circuits Physics Electronics

09/06/14

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

07/06/14

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

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