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A 12 volt battery is connected a light bulb and draws 150mA of current. What is the electrical resistance of a light bulb. How much power does it consume. How much will it cost to operate this bulb for a month,if the cost of electricity is $0.11 per kilo watt
An air filled with 75 microfarad has a voltage of 12V. An insulator with dielectric constant of 1.00095 is inserted between the metal plates. Calculate the capacitance. What is the new voltage across the capacitor? Calculate the original charge on the capacitor. How much charge is currently on the capacitor
Find the energy stored in free space for the region 2 mm ` r ` 3 mm, 0 ` ` 908, 0 ` 0 ` 908, given the potential field V : a 200 V; b 300cos VX
WE 12 and write it on a differential basis,
DEdv
Ans. 1.391 pJ; 36.7 J
A 250V generator supplies through a pair of feeders to a load consisting of 200 lamps of 200 watts each, 50 lamps of 100 watts each and 25 lamps of 40 watts each at a distance of 200 metres. The potential difference across the is 230V. Find the cross section area of a wire if the specific resistance of the wire is 1.77 micro ohm cm.
An electron moves in a straight line when moving through an electric field of 5000 Vim and a2T
magnetic field (the velocity, electric field, and magnetic field are all perpendicular to each other). If the
electric field is turned off, the electron will move in a circle with what radius
The parallel combination of five cells, each with electromotive force of 1.5 V and internal resistance of 0.5 Ω, is connected to an external resistance of 5.0 Ω. Find the (a) terminal voltage of the battery, and (b) terminal voltage of a cell.
Given: n=5
E= 1.5 V
r= 0.5 Ω
R= 5.0 Ω
The parallel combination of five cells, each with electromotive force of 1.5 V and internal resistance of 0.5 Ω, is connected to an external resistance of 5.0 Ω. Find the (a) total resistance of the circuit, (b) electromotive force of the battery, (c) total resistance of the circuit, and (d) current through the external circuit.
Given: n=5
E= 1.5 V
r= 0.5 Ω
R= 5.0 Ω
- Three lamps are rated 100 W, 50 W, and 10 W If each lamp is connected to a 220-V source, calculate the (a) current through each lamp and (b) resistance through each lamp.
- The resistance of a bulb is 50Ω. What is the current produced by a 24-V battery in the bulb? How many electrons does this current represent?
A CFL or compact fluorescent lamp uses less energy that its equivalent incandescent bulb. How much will a person save of he uses a 30 W CFL instead of 100 W incandescent lamp for 7 hr in 30 days? Electricity is priced at 9.55 hp/kW.hr
A copper wire is 2.50 m long and has a diameter of 2.5 mm. How much current will it draw when connected to 3.5 V source?
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#340153 on Dec 2023