At time t=0, when the switch is closed, the current through the circuit is determined by the voltage source and the resistance in the circuit.
What is circuit?
Electronic components such as resistors, computer chips, capacitors, inductors, and diodes are linked by conductive wires as well as traces that allow electric current to flow between them. It is a specific kind of electrical circuit, and in order for a circuit to be called electronic rather than electrical, there usually needs to be at least each active component present. Signals can be amplified, calculations can be made, and data can be transported from one location to another thanks to the combination of components as well as wires. Although photolithographic techniques on the a laminated substrate (a printed circuit board, or PCB) are now much more common, circuits can still be built from discrete nodes linked by individual wires.
The current will be equal to the voltage source (V) divided by the resistance (R), or V/R. The current will remain constant until the switch is opened at time t. At that point, the current will drop to 0, since the switch will break the circuit.
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Answer:
Consumers not having a can opener readily available
Explanation:
More people will be likely to buy a product that is easy to use. For example, yogurt cups have pull tabs in order to open the yogurt without leaving any cover attached. Ease of use is one of the key main design constraints when designing consumer goods.
Answer:
A gasoline engine transforms approximately 34% of the fuel's chamical energy into mechanical energy.
Explanation:
Many forms of combustion are examples of converting chemical energy into mechanical energy. Chemical energy is locked in the bonds of any combustible material: Gasoline, kerosene, wood, black powder.
Shooting off fireworks, igniting that bottle rocket converts the fuel inside into an exhaust gas which propels the rocket. Pulling the starter cord on your lawn mower ignites the fuel, releasing the energy that drives your lawn mower.
Automobiles, trains, planes all have combustion engines. Jet planes burn fuel more like a rocket engine, using the force generated by directed explosive gases.
The more interesting of this basic conversion principle today is in trying to create the stored chemical energy from mechanical energy. In other words, converting mechanical energy into clean fuel. One of the easiest to see is the use of wind power to produce the mechanical energy to create a DC energy and using that DC energy produce hydrogen from water via the process of electrolysis:
The wind drives the mechanical device that essential rotates a conductor through a magnetic field creating the DC voltage used to separate the hydrogen and oxygen. That mechanical to chemical conversion produces a pure hydrogen which has much more combustion potential energy than an equivalent mass of gasoline.
Answer:
(d) all of the above
Explanation:
Effect on the density of temperature: If we increase the temperature of any room then particles of the room moves and to and fro and so density is decrease
Effect on the viscosity of temperature : viscosity is inversely proportional to the temperature if we increase the temperature viscosity decreases and if we decrease the temperature viscosity increases.
Effect on the resistance of temperature : For metals if we increase the temperature then resistance increases and for semiconductor if we increase the temperature resistance decreases
So from above discussion all the parameter depends on the temperature so option (d( will be the correct option