As a capacitor is being charged in an RC circuit. the current flowing through a resistor isa) increasingb) decreasingc) constant
1 answer:
<h2>Answer: decreasing</h2>
An RC circuit is an electrical circuit composed of resistors and capacitors, where the charging time of the circuit is proportional to the magnitude of the electrical resistance
and the capacity
of the capacitor.
As shown below:
In this context, the electrical resistance is the opposition to the flow of electrons when moving through a conductor.
Therefore:
<h2>When a capacitor is being charged in an RC circuit, the current flowing through a resistor <u>decreases</u>.</h2>
And the correct option is b.
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Answer:
They will both be recorded in Joules
Explanation:
- The energy of an object refers in general to the mechanical energy of the object, which is the sum of its kinetic energy (KE), which is the energy of motion, and of its potential energy (PE), which is the energy due to its position above the ground:
- The work done by an object is equal to the product between the force exerted by the object, F, and the displacement, d:
(1)
The SI units of the energy is the Joules, J. The basic equivalence with SI units can be seen from the definition of kinetic energy:
where
m is the mass, measured in kilograms (kg)
v is the speed, measured in meters per second (m/s)
So we have, since the speed is squared
Now we can check from eq.(1) that the work as the same units. In fact, the force is measured in Newtons (N), and we know that force is equal to mass times acceleration, so we have:
Distance is measured in meters (m), so the work is measured in
Which corresponds to the definition of Joule. Therefore, both energy and work are measured in Joules.
The acceleration is
Explanation:
We can answer this question by using Newton's second law, which states that the net force acting on an object is equal to the product between the mass of the object and its acceleration:
where
F is the force
m is the mass
a is the acceleration
In this problem, we have
m = 25 kg is the mass of the rider+bicycle
F = 400 N is the force
Solving for a, we find the acceleration:
Learn more about Newton's second law:
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