3. In a circuit, a variable resistor is to be connected across a potential difference of 60 V to allow the current to be adjusted in the range from 40 mA to 100 mA. Over what range must the resistance vary?

Q: Calculate the diameter of a 1.6 cm length of tungsten filament in a small lightbulb if its…

A: Given Length (L)       = 1.6 cm Resistance (R) = 0.054 Ω

Q: The circuit below has a voltmeter that reads 6-V connected, in parallel, to resistor with unknown…

A: Given : V = 6 V I = 3 mA = 3 x 10-3 A

Q: 17. A commercial printer uses an average power of 400 W while printing. If its total resistance is…

A:

Q: Calculate the voltage necessary to supply a current of 6A through a 4ohm resistor.

A:

Q: ww hie 30 wwwww 4V Figure 6. Find the total resistance and current of the combination circuit.

A: Formula of equivalent resistance for series connection of resistors is as follows:…

Q: A circuit contains a total voltage of 120V and a current of 2.2A. What is the resistance in the…

A: Given that, A circuit contains a total voltage of 120V and a current of 2.2A So,  VTotal = 120 V…

Q: How much current flows through a device with a resistance of 15.6ohms if it is connected across a…

A: Ohm's law: ohm's law is defined as the current is directly proportional to the voltage and inversely…

Q: Determine the equivalent resistance of a 1.9 N, 1.9 2, and 1.2 2 resistors in parallel. If these…

A: (given) Resistors are R1=1.9 ΩR2=1.9 ΩR3 = 1.2 Ω Connected battery (V) = 13 V  Resistance are…

Q: The current in a circuit is 150 mA. How long does it take for 24 C to flow?

A:

Q: A battery with emf 9.00 V and internal resistance 1.10 Ω isin a complete circuit with a resistor of…

A: Given, v=9 v ri =1.10Ω r=15.3Ω Applying kvl in loop we get,-9+1.1i+15.3i=016.4 i=9i=0.5487 A

Q: What is the voltage across the terminals of a 42 ohms resistor that has 0-091 A of current flowing…

A: Given data :      Resistance  =  R       Current   =  i      To find :  Voltage

Q: What is the effect caused by the ammeter’s resistance when an ammeter is inserted into a circuit to…

A: What is the effect caused by the ammeter’s resistance when an ammeter is insertedinto a circuit to…

Q: Potential difference between two points of a wire carrying 42 ampere current is 12 volt. Calculate…

A: Introduction :  In this question we are provided with value of potential difference and  current .…

Q: Calculate the current (in amps) of a silver wire transfers a charge 420 C in 59 minutes.

A: The current is defined as flow of charge per unit time.

Q: How much power is consumed by a 12-V incandescent lamp if it draws 150 mA of current when lit?

A: Given that,                 Voltage : V= 12 (V)                 Current : I = 150 (mA)Here we need…

Q: The vaule of resistance of resistor having 31 Voltage and current of 21 Amplere is ohm.

A: Write the given values of the problem- Voltage=31 Current=21 amp

Q: Calculate the resistance of the heating element in a 2.0 kW electric heater that is designed for a…

A: In the given question We have to determine the resistance of the heating element.

Q: 5.A eixcuit has L8 ohms of resistance Land 28 amps of current. A. How much valdage umild loe…

A: The given circuit has a total resistance of 18 ohms. A current of 28 amperes is supposed to be…

Q: The equivalent resistance of a 10 ohms resistor and a 30ohms resistor connected in parallel is ____.

A: Given: Two resistance of a 10 ohms resistor and a 30ohms resistor connected in parallel combination.…

Q: In a 1500-W hairdryer when it is plugged in to 120 V calculate the resistance of the hairdryer.

A: Given that, Power, P=1500 WattPotential difference,V=120 VoltWe know that,Power, P=V2Rcan be written…

Q: A light bulb has a resistance of 200 S. It is connected to a power source of 100 V. Find the current…

A: Given:  Resistance R = 200 Ohms and the voltage supply is V = 100 V According to the ohms law the…

Q: What is the current carried by L2?

A: Given:-  A current  in the L2 = 0.5 A  A circuit is given as  Find:-  a) Draw again the circuit of…

Q: Design: Parallel (with 3 resistors) Total Voltage of Battery: 20.0 V Total Resistance: 28.0 ohms…

A: Given; Battery: 20.0 V Total Resistance: 28.0 ohms(3  resistors in Parallel )

Q: 4. Three 60.0-W, 120-V lightbulbs are connected across a 120-V power source. Find (a) the total…

A: Given:- Rating of the three bulbs is 60W, 120 V Supply voltage is Vs=120 V Required:- Total power…

Q: What is the electric field strength inside this wire?

A: The given data    The diameter of the wire d = 2 mm = 0.002 m The current i  = 20A

Q: Hw. Find the equivalent Conductance G for the circuit in figure 12 S -12+5 2

A:

Q: A GPS draws a current of 26 mA at 120 V. How much power (in W) does the device require? W Need Help?…

A: In order to determine how much power (P) the GPS device uses,  You can use the formula: P=V∗I…

Q: If a 4 Ohm resistor and a 12 Ohm resistor are conneted in parallel, what is the total resistance?

A: (given) Resistors R1 and R2 are connected in parallel. R1 = 4 Ω R2 = 12 Ω Resistance (R) = Potential…

Q: 27 S2 ww 42 2 ww 11 2 ww 25 V 20 2 ww Find its equivalent resistance. Answer in units of 2.

A: given circuit as shown in figure

Q: In a 1500-W hairdryer when it is plugged in to 120 V calculate the resistance of the hairdryer.

A: Given values: Power P = 1500 W Potential difference V = 120 V

Q: Potential difference between two points of a wire carrying 38 ampere current is 5 volt. Calculate…

A:

Q: Two resistors are connected in series and a source voltage of 55 Volts is applied across the series…

A:

Q: Potential difference between two points of a wire carrying 32 ampere current is 6 volt. Compute the…

A: Introduction :  In this question we are provided it value of voltage and current  . With these data…

Q: What is the resistance of a circuit operating at 13.0 V and delivering a current of 7.1 A? Give you…

A: Given That: The oprating at Voltage, V=13 Volts The Delivering Current is, I=7.1 Amp

Q: The total current through the circuit when booth S, and S2 are closed is

A:

Q: The current in a circuit is 3.8 A and Valtage is 7V find the value of resiatence

A: Given data :          Current  =  I           Voltage  =  V         To find :             Resistance…

Q: An electric heater works by passing a current of 110 A thought a coiled metal wire, making it red…

A:

Q: An electric heater carries a current of 14.0 A when operating at a voltage of 120 V. What is the…

A: Given: current carried by electric heater, I = 14 A Operating voltage, V =120 V

Q: An electric heater carries a current of 13.5 A when operating at a voltage of 120 V. Calculate the…

A: Current, I = 13.5 AVoltage, V = 120 V

Q: An ipod uses 3.7 volts with direct current of 865 milliamps. What is the equivalent resistance of…

A: Given: Voltage that an iPod use is V = 3.7 volts Current I = 865 milliamps To determine equivalent…

Q: A piece of resistance wire 15.6m long and of a cross section area 12mm² passes a current of 7.9A…

A:

Q: Refer to the figure below. How much current is flowing through the circuit if the power dissipated…

A: Given: The reistance of the each resistor is 4.76 Ohm. The electrical power is 7.05 W.

Q: Problem 10. Determine the amount of each current for the following network: 16 volts A ܕܐ .m 2 ohms…

A:

Q: If a 1500-W hair dryer is connected to a 120-V line. What is the maximum current drawn? I = What is…

A: Electric power is given by P = I×V And by Ohm's law, V = IR

Q: Potential difference between two points of a wire carrying 25 ampere current is 2 volt. Calculate…

A: Given data :   Current  =  I    Potential difference  =  V        To find :         Resistance

Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.