Answering Electric Current Questions

High School
Physics
Electric current

A capacitor is charged to a potential of 12.00 V and is then connected to a voltmeter having an internal resistance of 3.40 MΩ. After a time of 4.00 s, the voltmeter reads 3.00 V. What are (a) the capacitance and (b) the time constant of the circuit?

AKHONA SITHOLE2022-05-21

A 60 kg skier starts from rest from the top of a 50 m high slope.If the work done by friction is -6000J, what is the speed of the skier on reaching the bottom of the slope?

kromo8hdcd 2022-05-20

How much power is produced if a voltage of 12V is applied to a circuit with a resistance of $144 Ω$ ?

Adelyn Rodriguez 2022-05-20

What is gamma in the damping equation?
$x^{″} + γ x^{'} + w_{0}^{2} x = 0$
That is the general equation for damped harmonic motion. What is the term or name that describes gamma ?
Is it called the damping constant ? I know its the ration between the resistive coefficient (b) and mass of the system (m) but what do we actually call it ?

et1wdwk4o 2022-05-20

In a given circuit, the supplied voltage is 1.5 volts. One resistor is 3 ohms and the other is 2 ohms. What is the current in the circuit?

Laila Andrews 2022-05-19

If you plug a device that has a resistance of 15 ohms into a 120-V current, how much current does it draw?

Jace Wright 2022-05-19

To prove: $\cot^{- 1} 7 + \cot^{- 1} 8 + \cot^{- 1} 18 = \cot^{- 1} 3$

kromo8hdcd 2022-05-19

A charge of 24C passes through a circuit every 9s. If the circuit can generate 6W of power, what is the circuit's resistance?

Azzalictpdv 2022-05-19

What is the electric current produced when a voltage of 24V is applied to a circuit with a resistance of $8 Ω$ ?

bedblogi38am 2022-05-18

How much power is produced if a voltage of 4V is applied to a circuit with a resistance of $27 Ω$ ?

Flakqfqbq 2022-05-18

What will be the area which is bounded by $x = 0, y = π / 4$ and $y = \arctan (x)$ ?

linziboobeary1o8p 2022-05-18

A charge of 36C passes through a circuit every 9s. If the circuit can generate 32W of power, what is the circuit's resistance?

Brody Collins 2022-05-18

How much power is produced if a voltage of 2V is applied to a circuit with a resistance of $10 Ω$ ?

pevljivuaosyc 2022-05-18

Say we got an alloy made of $90$ % Au and 10%Cu. The atomic mass of gold is
$A_{A u} = 197 g / m o l e$
and of copper
$A_{C u} = 63.5 g / m o l e$
The specific resistivity of gold is
$ρ = 22.8 n Ω m$
and the Nordheim coefficient is
$C = 450 n Ω m$
Then by the Nordheim rule we have that the resistivity of this alloy is given as
$ρ = ρ_{A u} + C X (1 - X)$
where X=0.1, and represents the percentage of Copper in the alloy. Using the above I got that
$ρ = 63.3 n Ω m$
, but data shows that the actual resistivity is $ρ = 108 n Ω m$ . What about X? Is it the percentage of atoms in the alloy, or is it the percentage of mass in the alloy?

Jordon Haley 2022-05-18

If $a, b, c \in (0, \infty)$ with abc=1 prove:
$a^{2} + b^{2} + c^{2} + 3 (a b + b c + c a) \leq \frac{1}{2} (\sqrt{a} + \sqrt{b} + \sqrt{c}) (a + b) (b + c) (c + a) .$
On atypical inequality (a smaller amount than a product) that resisted my attempts to prove it.

Marco Villanueva 2022-05-17

What is the resistivity coefficient of graphene?

quorums15lep 2022-05-17

The Hall coefficient is defined as this:
$R_{H} = \frac{E_{y}}{j_{x} B_{z}} .$
Always as $R_{H}$ . I am currious as to how to use this coefficient? Is it the y-direction resistance/resistivity (it is very close to the general resistivity from Ohm's law $ρ = E / j$ )? Then I should be able to find it by $R_{H} = V_{y} / I_{y}$ (or $R_{H} = E_{y} / j_{y}$ ).
or is it simply defined as this as a proportionality constant (it does indeed look good with the three factors combined around one constant) and not an actual physical quantity?

Brooklynn Hubbard 2022-05-17

What is the electric current produced when a voltage of 15V is applied to a circuit with a resistance of $6 Ω$ ?

agrejas0hxpx 2022-05-15

Derivative of $e^{- x}$

Daphne Haney 2022-05-15

A Binomial Coefficient Sum: $\sum_{m = 0}^{n} (- 1)^{n - m} (\binom{n}{m}) (\binom{m - 1}{l})$

The practical use of the electric current problems is met basically everywhere even if you are not majoring in Engineering. Take an example of data programming and the use of safety (data transfer) questions when the data is being transferred from place to place via cloud storage solutions. The same is related to automation and logistics where the electric current equation will help to calculate the limitations and the available resources. See some answers to the questions dealing with the electricity principles to get a better idea of how it works and compare the existing solutions to your task objectives!

Electric current

Electric Current Explanation Find Here