(e) An energy source forces a constant current of 2 A for 10 s to flow through a light bulb. If 2.3 kJ is given off in the form of light and heat energy, calculate the voltage drop across the bulb.

Q: What is the electrical energy stored per 1 squared micron of cell membrane at the voltage -70 mV?

A: Area of cell membrane=A=1 micron2=1×10-62 m voltage=V=-70 mV=-70×10-3V

Q: A representative lightning strike is caused by a voltage of 170,000,000 V and consists of a current…

A:

Q: In an electrical circuit, what is the current (A) flowing through the wire if the initial voltage of…

A: Initial voltage, Vi = 18 V Final Voltage, Vf = 2Vi = 36 V Initial resistance, Ri = 35 Ohms Final…

Q: An electric car is being designed to have an average power output of 3,500 W for 2 h before needing…

A:

Q: When removing a wool sweater, a static discharge of 5.03 µC dissipates 6.82 10-3 J of energy. What…

A: Introduction: When two objects rubbed together then due do friction, electrons of atoms of both the…

Q: The cost of electricity in Saskatoon is currently about 16.35 cents/kWh (including carbon tax). At…

A: Given data: Cost of electricity = 16.35 cents/kWh Power (P) = 80.0 W Time (t) = 2 weeks

Q: If the potential difference across the two ends of a conductor is 5 V and the current through it is…

A:

Q: A microwave oven running at 65% efficiency delivers 950 Wto the interior. Find (a) the power drawn…

A: efficiency = 65 %  Output power = 950 W  Voltage of input, V = 120 V

Q: 13-V storage battery delivers current at the rate of 59 A. In a 25 min period, the heat lost from…

A:

Q: Explain the difference between energy and power. If a household has an average annual energy…

A: Difference between energy and power? if E=8500 Kwh , find P= ? how power consumptions varies during…

Q: An electric device draws 7.10 A at 240 V. If the voltage drops by 10 % , what will be the current,…

A:

Q: Suppose that by mistake you leave ten 50-W light bulbs turned on at your house for 24 hr. Say that…

A: Given  Power P = 50 W Time t = 24 hours = 24 × 60×60 = 86400 sec

Q: What is the useful energy output when a 60 W light bulb is on for 2 hours? Recall, traditional light…

A:

Q: An electric fan motor draws 10 C of charge in 2 seconds from a 220 V source. What is the power…

A: Given in question - Charge(Q) = 10 C                                   Time(t) = 2 seconds…

Q: A typical cost for electric power is $ 0.135 per kilowatt-hour. (a) Some people leave their porch…

A: Solution

Q: Calculate the cost of leaving 1300 W refrigerator for a year, if the electric company charges you 12…

A: Write the formula for the total amount of power used in a year. Ptotal=watts×hours used per day×days…

Q: How much time is needed

A: Given data: The mass of tissue is: m1  = 1g The mass of water is: m2 = 0.5 g The initial temperature…

Q: The emf of a cell falls from 3 volts to 2.8 volts when it's terminals are joined to an electrical…

A: The total EMF of a cell is equal to the potential drop across the external load of the circuit plus…

Q: A standard flashlight battery can deliver about 2.3 W-h of energy before it runs down. (a) If a…

A:

Q: A typical flash bulb is rated at 310 mA and 2.90 V, the respective values of current and voltage…

A: Page 1

Q: An iron wire with a diameter of 2 mm will be used to connect a voltage source to a 100 kΩ resistor.…

A: Power loss in the resistor: The power loss in the resistor is given by the formula, P=i2R…

Q: An electric kettle draws 10 A at 220 V for 2 minutes to heat water. Calculate the energy put into it…

A: Given that, Current =10 A Voltage = 220 V Time = 2 minutes

Q: pacity of 2.44 joules per gram kelvin and a specific gravity of 0.7893. Assume the initial…

A:

Q: (1) An incandescent light bulb produces 5.85 Joules of light energy each second. This bulb is 7.80%…

A: Given data:Incandescent light bulb light energy per second: 5.85 Joules/secondIncandescent light…

Q: C3 8 pF C4 6 pF Ci C2 6 pF 12 pF 12 V

A:

Q: A current of 2 A, passing through a conductor produces 80 J of heat in 10 s. The resistance of the…

A:

Q: What is the available energy content, in joules, of a battery that operates a 2.00-W electric clock…

A: Given data: Power, P=2.00 W Time taken, t=540 days

Q: An electric light bulb rated at 100 W is left on for 10 days and nights. (a) How much energy was…

A: Given data:  Power rating of electric light bulb (P) = 100 W = 0.100 kW Time (t) = 10 days and…

Q: The cost of electricity in Saskatoon is currently about 16.35 cents/kWh (including carbon tax). At…

A: Given Data Cost of electricity is given as 16.35 cemts/kWh Power of the porch light is Pl=80.0 W…

Q: When removing a wool sweater, a static discharge of 7.63 µC dissipates 6.12  10-3 J of energy. What…

A:

Q: An electric water heater is designed to produce 48 kWkW of heat when it is connected to a 240-V…

A:

Q: A microwave oven draws 8 A when supplied with 120 V. The microwave is subsequently used for 6…

A: To find the electrical energy used by microwave

Q: A 20-V storage battery delivers current at the rate of 53 A. In a 28-min period, the heat lost from…

A: