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

A:

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

A:

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.