Question:
The peak value of alternating current is $ 5\sqrt{2} $ ampere. The mean square value of current will be:
The peak value of alternating current is $ 5\sqrt{2} $ ampere. The mean square value of current will be:
Updated On: Aug 1, 2022
- $ 5\,\,A $
- $ 2.5\,\,A $
- $ 5\sqrt{2} $
- none of these
Hide Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
Given, $ I_0 = 5 \sqrt 2 $ A
Root mean-square value of current
$ I_{ rms} = \frac{ I_0}{ \sqrt 2} = \frac{ 5 \sqrt 2}{ \sqrt 2} = 5 \,A $
Was this answer helpful?
0
0
Top Questions on AC Voltage
- In \(AC\) circuit with source voltage \(E \) = \(20\) \(sin\; 1000 \;t\) is connected to series \(L-R\) circuit whose power factor is \(\frac{1}{\sqrt 2}\) If \(E = 25\) \(sin \;2000\) \(t\), the new power factor is :
- JEE Main - 2024
- Physics
- AC Voltage
- Alternating voltage and current in circuit is given as \(V = (100 \;sin \;ωt)\) volt
\(I = 100\;sin\bigg(ωt+\frac{π}{3}\bigg)mA\)
Find average power dissipated in circuit.- JEE Main - 2024
- Physics
- AC Voltage
- A student is provided with a variable voltage source V, a test resistor Rr = 10Ω, two identical galvanometers G1 and G2 and two additional resistors, R1 = 10MΩ and R2 = 0.001Ω. For conducting an experiment to verify ohms law, the most suitable circuit is
- JEE Main - 2023
- Physics
- AC Voltage
- The I–V characteristics of a p-n junction diode in forward bias is shown in the figure. The ratio of dynamic resistance, corresponding to forward bias voltage of 2 V and 4 V respectively, is
- JEE Main - 2022
- Physics
- AC Voltage
- The maximum and minimum voltage of an amplitude modulated signal are 60 V and 20 V, respectively. The percentage modulation index will be:
- JEE Main - 2022
- Physics
- AC Voltage
View More Questions
Questions Asked in Punjab PMET exam
- A wheel is rotating at $ 900\,\,rpm $ about its axis. When the power is cut off it comes to rest in $ 1\min $ . The angular retardation in $ rad/{{s}^{2}} $ is
- Punjab PMET - 2011
- Motion in a plane
- Galileo writes that for angles of projection of a projectile at angles $\left(45^{\circ}+\theta\right)$ and $\left(45^{\circ}-\theta\right)$, the horizontal ranges described by the projectile are in the ratio
- Punjab PMET - 2011
- Motion in a plane
- The potential energy of a weightless spring compressed by a distance a is proportional to
- Punjab PMET - 2011
- Oscillations
- The plane of a dip circle is set in the geographic meridian and the apparent dip is $\delta_1$. It is then set in a vertical plane perpendicular to the geographic meridian. The apparent dip angle is $\delta_2$. The diclination $\theta$ at the plane is
- Punjab PMET - 2011
- the earth's magnetic field
- The wavelength of the first line of Balmer series is $6563\,??. The Rydberg constant for hydrogen is about
View More Questions
Concepts Used:
AC Voltage
When voltage changes its direction after every half cycle is known as alternating voltage. The current flows in the circuit at that time are known as alternating current. The alternating current(AC) follows the sine function which changes its polarity concerning time. Most of the electrical devices are operating on the ac voltage.
