English
Hindi

Question

Download Solution PDF

If the peak value of an alternating current is 8 A, then the RMS value of the current will be ________.

This question was previously asked in
SSC JE Electrical 10 Oct 2023 Shift 2 Official Paper-I
Download PDF Attempt in App
View all SSC JE EE Papers >
  1. √3 A
  2. 3√2 A
  3. 4√2 A
  4. 2√3 A

Answer (Detailed Solution Below)

Option 3 : 4√2 A
Free Tests
View all Free tests >
Free
RRB JE CBT I Full Test - 23
100 Qs. 100 Marks 90 Mins
Start Now

Detailed Solution

Download Solution PDF

Concept:

  • An alternating current is an electric current that reverses direction periodically
  • The general equation is given by
    • I = i0 sin (ωt)
    • I = i0 cos (ωt)
  • RMS means Root-Mean-Square of instantaneous current
  • I0 = Peak current, ω = frequency

Calculation:

Given, I0 = Peak current = 8 A

=

Download Solution PDF
Latest SSC JE EE Updates

Last updated on Jun 16, 2025

-> SSC JE Electrical 2025 Notification will be released on June 30 for the post of Junior Engineer Electrical/ Electrical & Mechanical.

-> Applicants can fill out the SSC JE application form 2025 for Electrical Engineering from June 30 to July 21.

-> SSC JE EE 2025 paper 1 exam will be conducted from October 27 to 31. 

-> Candidates with a degree/diploma in engineering are eligible for this post.

-> The selection process includes Paper I and Paper II online exams, followed by document verification.

-> Prepare for the exam using SSC JE EE Previous Year Papers.

‹‹ Previous Ques
Next Ques ››
Exams Tests Super Practice

More RMS Value of Time Varying Waveforms Questions

Q1.The instantaneous current in a circuit is given by i = 4 cos (ωt + θ) A. The RMS value of the current is:
Q2.If the peak value of an alternating current is 8 A, then the RMS value of the current will be ________.
Q3.The expression for the RMS value of the current of a triangular wave form is:
Q4.In an AC circuit, the peak voltage is 388 V. Its effective voltage is:
Q5.The rms value of a sine wave whose average value equals 7.644 V is:
Q6.What is the RMS value of a sinusoidally alternating voltage if its maximum value is equal to 10 V?
Q7.What will be the RMS value of the periodic voltage in which the following values suddenly change from one value to the next for equal time intervals? 0 V, 5 V, 10 V, 20 V, 50 V, 60 V, 50 V, 20 V, 10 V, 5 V, 0 V, -5 V, -10 V, etc.
Q8.The ________ value of alternating current is specified by that steady (DC) current, Which flowing in a given circuit for a given period of time, produces the same amount of heat as the alternating current produces when flowing through the same circuit for the same period of time.
Q9.If the peak voltage of an AC voltage waveform is 14 V, then what is its RMS value?
Q10.RMS value is defined based on which of the following?

More Sinusoidal Steady State Analysis Questions

Q1.Current I(s) in RL circuit is given as \(\rm I(s)=\frac{1.5}{s+4}\) Obtain i(t) for t > 0
Q2.If the peak voltage of a full-wave rectifier is 20 V, what is the average output voltage?
Q3.What will be the current relationship in time domain for a capacitive circuit?
Q4.What will be the voltage relationship of frequency domain relation for inductor having time domain v(t) = Ldi/dt?
Q5.If the power factor of a three-phase system is 0.8, and the apparent power is 10 kVA, then what is the active power?
Q6.If the impedance of a parallel circuit is given by Z = 5 − j4, then the admittance is given by________.
Q7.Which of the following statements regarding active power in AC circuits is INCORRECT?
Q8.In a series RLC circuit, the total impedance is minimum when _______.
Q9.In a power triangle, what is the relationship between active power (P), reactive power (Q) and apparent power (S)?
Q10.Three similar coils are connected in star when connected to a three-phase AC supply, drawing a line current of 10 A. kVA and KW inputs are 30 and 18, respectively. What are the resistance and reactance of the coil, respectively?
Suggested Test Series
View All >
Current Affairs (CA) 2025 Mega Pack for SSC/Railways/State Exam Mock Test
431 Total Tests with 4 Free Tests
Start Free Test
SSC Reasoning PYP Mock Test Series (20k+ Questions)
1712 Total Tests with   0 Free Tests
Start Free Test

More Network Theory Questions

Q1.Which of the following factors is primarily used to determine the rating of a resistor?
Q2.In an electrical circuit, there are two resistors (R1 = 5 Ω and R2 = 10 Ω) connected in series with a 15 V battery. What is the voltage drop across R2, according to Kirchhoff’s Voltage Law (KVL)?
Q3.In a three-phase system, the sum of the three phase voltage phasors in a balanced system is _____. 
Q4.If two AC waveforms have a phase difference of 0°, they are said to be _____. 
Q5.Current I(s) in RL circuit is given as \(\rm I(s)=\frac{1.5}{s+4}\) Obtain i(t) for t > 0
Q6.A parallel RLC circuit has an inductance of 1 H and a capacitance of 1 µF. What is the resonant frequency (f0 )? 
Q7.A sinusoidal voltage is given by v(t)=100 sin(ωt+30°). What is the corresponding phasor representation?
Q8.If the peak voltage of a full-wave rectifier is 20 V, what is the average output voltage?
Q9.If the frequency of an AC source connected to a pure capacitor is doubled, the capacitive reactance will ________.
Q10.Find the voltage Vs in the circuit by using Kirchoff's Voltage Law. 
Testbook Edu Solutions Pvt. Ltd.
1st & 2nd Floor, Zion Building,
Plot No. 273, Sector 10, Kharghar,
Navi Mumbai - 410210
support@testbook.com
Toll Free:1800 833 0800
Office Hours: 10 AM to 7 PM (all 7 days)
Company
About usCareers We are hiringTeach Online on TestbookPartnersMediaSitemap
Products
Test SeriesTestbook PassOnline CoursesOnline VideosPracticeBlogRefer & EarnBooks
Copyright © 2014-2022 Testbook Edu Solutions Pvt. Ltd.: All rights reserved
User PolicyTermsPrivacy
Hot Links： teen patti sequence teen patti 3a teen patti customer care number