Current Electricity Questions and Answers

Which circuit elements supply energy in this circuit R1 2 Volts 11 V1 V1 3k R2 1k 11 4 mA

All resistors have the same value R We connect a 6 volt source between points A and B polarity doesn t matter and the circuit draws 4mA The value of Ris ohms A B R1 R R2 R R3 R R4 R R5 R6

Using Mesh analysis 24 60 V 492 W 8Q 122 3 4 527 j6 j4 c vo KVL1 24 60 411 j6 1 12 0 KVL j6 12 1 8 j4 0 Need help solving this by hand if u could show

2KQ R 2KQ R R ZOOO 2000 2000 P 2K 2 0 Copy link MULTIPLE CHOICE QUESTION What is the total current 2 amps 0 02 amps 0 2 amps 20 amps

What is VT for the circuit shown below Round your answer to the nearest whole number and DO add units Ilk R 1 20 A R2 1092 15 A R 3 5 A

joules is created in this E 3 0 x 10 0 J 7 How many universal mass units are needed to produce 3 724 x 104 mega electron volts of energy

2 The switch in the LR circuit shown is closed at t 0 a 2 pts What is the current through the resistor at t 0 b 2 pts After a very long time once the current becomes steady what will be the current through the resistor voor L 220mH c 2 pts How long does it take the current to reach half its maximum value R 30 Vo 12 0 V www

If the voltage V between the spheres is 30 000 V for the given charged amounts in the previous problem then what would be the current if you connect a straight conducting bar between them that has a resistance of 0 78 Ohms

Project 1 a Sketch a transistor level schematic and layout for Y AB C A B b Give the sizes of all transistors assume that for the basic inverter n 4 p Cox 430 A V and C 107 5 A V and that the channel length is 130 nm VDD 1 2 V and Vin V p 04V Verify your design with

4 Two resistors are connected in series across a 12 V battery One resistor has a power of 18 W and the other is 6 W Determine the total equivalent resistance and the voltage across each resistor 5 Determine how much charge passes through the 6 W resistor in 20 minutes charge q M 302 120 V

1 0 k E H 1 0 kQ A D 10 KQ 1 0 kn 10 k 10 kn 10 kQ www 1 0 kn B C 12 V F 41 G 10 k

You decide to relax for the night by playing video games on your PlayStation 4 You lose track of time and end up playing for 3 hours The PS4 uses 197 watts hour You have an expensive plasma TV that uses 339 watts hour The electricity to your home is produced by traditional methods How much did your gaming session cost in electricity Please enter the dollar amount using the numerical values only For example 12 73 would be entered as 12 73 or 32 cents would be entered as 0 32

Noticing the sink full of dishes you place them in the dishwasher and let it run for an hour and a half including the drying cycle Your dishwasher uses 2000 watts per hour The electricity to your home is produced by traditional methods How much did running the dishwasher cost in electricity Please enter the dollar amount using the numerical values only For example 12 73 would be entered as 12 73 or 32 cents would be entered as 0 32

2 The circuit below contains 3 resistors and a 12 0V battery Resistors A and B have a value of 5 0092 and resistor C is 3 000 b a a What is the equivalent resistance of the circuit Req R R R3 b What is the current in resistor C

If 13 C of charge flow through a point in the circuit in 5 seconds what is the current B

If you were given a box of only 20 2 resistors could you construct circuits with total resistances of 52 102 152 25 02 40 2 and 50 2 Draw the combination of 20 2 resistors to give the following 102 150 25 2 50 40 2 50

6 1 From the circuits above predict which bulb or bulbs will be the brightest Why do you think that 2 Current is the flow of charge measured in coulombs sec amps in a circuit Describe how you think current will flow in the different types of circuits above

For the circuit shown below find the Thevenin equivalent circuit across terminals a and b 3A 40 4V IL ww 80 40

For the circuit shown below find the Norton equivalent circuit across terminals a and b 40 m 80 6A D

20 692 M 292 In the circuit that is shown here the current across the 2 Q resistor is 4 0 A What is the current across the O2 0 A O 3 8 A O 12 A 1 3 A

15 The energy of on a 4 mH inductor is 100 mJ when connected in series to a 10 kW resistor a What is the energy dissipated by the resistor b If the direction of the current changes so it flows on the opposite direction what is the power dissipated across the resistor if the energy stored in the inductor remains the same

19 A red hot stove element has a current of 12 A and a voltage drop of 240 V Calculate the resistance of the element

2 Determine the voltage required to move 10 coulombs of charge if it took an energy of 2 Joules to move them 3 What is the relationship between the resistivity and the conductivity 4 The conductance of a cable is 1 S How much current flows through the cable if a voltage of 10 V is applied to it 5 How much power is dissipated when 10 mA flows thorough a resistor having a conductance of 1mS 6 Two 1 k resistors are connected in series what is the equivalent conductance in mS 4 7 How much power is a 12 V battery supplying if the current drawn by a circuit is 2 mA Beware of your answer s sign

What is the current if 9 32C of charge pass a point in a circuit every 2 17s 20 2A 7 15A 4 29A 0 233A

A ww C B TH The resistors in the circuit above have values as follows A 2 000 B 3 000 C 4 000 A What is the equivalent resistance of the circuit B What is the total current in the circuit if the battery has a potential difference of 6

Doubling the resistance in a series circuit will reduce the current flow True False

Using the same image as Question 14 what do the blue arrows represent Battery

In this image of a simple DC circuit what do the red arrows represent I Battery m

4 Use this circuit diagram to answer the following question 9 V 16 What type of circuit is this complex series short parallel R 10 2 R 22 ww R3

20 What kind of circuit is shown here 9 ohms 6 ohms series circuit parallel circuit short circuit 30 V

1 VVV A x Which of the lamps in the circuit above would be lit with the switch in the position shown only lamb C all three are lit only lamp A VVV only lamp B B

3 What is the voltage across a resistor of 5 0 ohms that carries a current of 5 0 A X 1 0 V 1 0 10 V 5 0 V

1 Three resistors with values of R R and R3 are connected in parallel Which of t following expresses the total resistance Rear of the three resistors x Req R R R3 Req R R R3 1 Req 1 1 1 R1 R2 R3

3 A circuit is composed of resistors wired in series Which of the following best describes the total or equivalent resistance of the series circuit x The equivalent resistance is equal to the largest resistance in the circuit The equivalent resistance is greater than the sum of all the resistances in the circuit The equivalent resistance is equal to the sum of the individual resistances The equivalent resistance is less than the smallest resistance in the circuit

18 An instrument used to measure the voltage between two points on a circuit is calle a n barometer

For the given circuit A battery of EMF 120 V is connected across AB Potential difference across points B and C in volts will be A 20 C 10 O A A B R www 2R R www R ww 2R B 30 D 15 2R

2 For the following circuit network 9 pts j10 22 ell 6 63 mH I 2230 mA b The value of the capacitance 1 pts x f 377 Hz R Determine the following quantities a The time dependent function that describes the current source 1 pts V 01 c The value of the inductive impedance Z 1 pts

Select one O a O b C O d In the circuit shown above how much current is flowing through the 5 2 resistor 5 0 A 1 0 A 0 5 A 12V 2 0 A 12kQ 5kQ E www 7H

24v R 120 R2 2402 Please use this image to answer Questions 35 thru 41

60v R 62 R3 1002 W R 140 Please use the image above to answer Questions 34 thru 40 The total voltage drop across resistor R3 is

An 18 V battery is connected in parallel with two bulbs one with 8 Ohms of resistance and one with 24 Ohms of resistance a What is the total resistance in the circuit b What is the total current in the circuit c What is the current through the 8 Ohm resistor d What is the current through the 24 Ohm resistor

You have series circuit with a 20 V battery and two light bulbs one 5 Ohms and one 7 Ohms a What is the total resistance of this circuit b What is the total current through this circuit c What is the voltage across the 5 Ohm bulb d What is the voltage across the 7 Ohm bulb

une R 302 2 002 R 40 12V 40 a Consider the circuit drawn below Find the values of each of the currents b 3602 380 R 402 ww 5 00 Fr 4 002 A R 102 The ammeter in the figure below reads 1 0A Calculate the magnitude of the currents I and I Assume that the ammeter in the figure below is removed and the current that flows through the 4 092 path I3 is unknown Determine all the currents in the circuit

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I AQ At P V R I V R R pL A A Tr P IV P 1 R 11 What is the resistance of a 4 0 m long aluminum wire paluminum 2 65 x 108 22 m whose cross sectional area is 2 5x107 m 12 How much current must be applied across a 20 02 light bulb filament in order for it to consume 60 W of power 13 When 12 V is applied across a resistor it generates 900 W of heat what is the magnitude of its rocic

4 Which ones are equivalent electrical aspect ww a b www til www c W

When four identical resistors are connected to an ideal battery of voltage V 10 V as shown in the figure the current I is equal to 0 20 A What is the value of the resistance R of the resistors 10 V 20 Q O 10 Q 50 Q 40 Q R R ww www www R R ww

The voltage and power ratings of a particular light bulb which are its normal operating values are 110 V and 60 W Assume the resistance of the filament of the bulb is constant and is independent of operating conditions If the light bulb is operated at a reduced voltage and the power drawn by the bulb is 36 W what is the operating voltage of the bulb 85 V 72 V 66 V O 78 V O 90 V

What must be the diameter of a cylindrical 120 m long metal wire if its resistance is to be 6 0 22 The resistivity of this metal is 1 68 10 80 m O 0 0325 mm O 0 65 mm 0 325 mm O 0 065 mm 0 65 cm

are connected in parallel with a 24 V battery 1 Draw the circuit include a voltmeter for each resistor and an ammeter to read total current an current through the 180 and 360 resistors A 24V 1 2 Find total resistance 1 1 Req 182 I V1 Ri 11 3 3612 3 Find total current and current through each resistor VT V1 V2 21V 24V 24V IT VT 24V Rea 1222 w 1 36 2 240 15 2 1852 Req 36 Req 12 12 5 M 2A 3612 teattet 1 22 1 3 A Iz V2 240 36 2 0 67A