0
A solar cell provides an emf of .45 V If the cell supplies a constant current of 18 mA for 9hrs how much electrical energy does it supply?
Wiki User
∙ 14y ago
1 hour = 3,600 seconds
9 hours = 32,400 seconds
Power = E I = (0.45 x 0.018) = 0.0081 watt = 0.0081 joule per second
Energy = Power x time = 0.0081 x 32,400 = 262.44 joules
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
What does not carry an electrical current?
An electrical insulator.
How the electrical charge is created?
An electrical current
What can induce an electrical current in a wire?
A magnetic field can induce an electrical current in a wire.
True or false Moving current has electrical energy?
It is true that moving current has electrical energy.
What is the instrument used for electrical current?
An Ammeter is used to measure electrical current, which is measured in Amperes (or Amps).
Is a battery provides not a source of constant current or a source of constant voltage?
Batteries will provide a source of constant voltage. A battery also can be used to produce an electrical current immediately upon a necessary connection.
Constant voltage power supplies will maintain a constant voltage under varying?
current.
What is the constant electrical quantity in a series connection and a series-parallel connection?
constant electrical quantity-series connection -current constant electrical quantity-parallel connection - voltage
What does a battery in an electrical ciruit do?
Provides DC current
The generator supplies AC input power to a constant current regulator?
416 20
Do you agree or disagree with your lab partner who says a battery provides not a source of constant current but a source of constant voltage?
agree
What increases when the resistance of an electrical circuit decreases?
Current increases if the voltage remains constant.
The constant flow of electrons through a complete circuit?
That is called electrical current.
What happens to electrical current and voltage in a parallel circuit as you add more bulbs?
Voltage remains constant; current increases.
What is a condition that provides an undesired path for electrical current?
The condition you are looking for is a short circuit.
What is a ballast resistor?
A ballast resistor is an electrical resistor whose resistance varies with the current passing through it, thus maintaining a constant current.
Electrical term DC stand for?
Direct Current. As from a battery, solar cell or most plug-in power supplies.
