# Electromagnetic Induction & Alternating Currents-Peak and RMS Value of AC (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 1 - 4 of 14

Access detailed explanations (illustrated with images and videos) to 2247 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. Subscription can be renewed yearly absolutely FREE! View Sample Explanation or View Features.

Rs. 550.00 or

How to register?

## Question number: 1

» Electromagnetic Induction & Alternating Currents » Peak and RMS Value of AC

Edit
MCQ▾

### Question

If an alternating voltage is represented as E = 141 sin (628t), then

(1) The rms voltage is 141V

(2) The rms voltage is 100V

(3) The frequency is 50 Hz

(4) The frequency is 100 Hz

Select the correct answers and mark it according to the following codes:

### Choices

Choice (4) Response

a.

2 and 4 are correct

b.

1 and 2 are correct

c.

1 and 3 are correct

d.

1,2 and 3 are correct

## Question number: 2

» Electromagnetic Induction & Alternating Currents » Peak and RMS Value of AC

Edit
MCQ▾

### Question

The r. m. s. value of an ac of 50 Hz is 10 A.

(1) Time taken by the alternating current in reaching from zero to maximum value is 5 x 10 -3 sec

(2) Time taken by the alternating current in reaching from zero to maximum value is 2 x 10 -3 sec

(3) The peak current is 14.14 A

(4) The peak current is 7.07 A

Select the correct answers and mark it according to the following codes:

### Choices

Choice (4) Response

a.

1,2 and 3 are correct

b.

1 and 2 are correct

c.

1 and 3 are correct

d.

2 and 4 are correct

## Question number: 3

» Electromagnetic Induction & Alternating Currents » Peak and RMS Value of AC

Edit
MCQ▾

### Question

An alternating voltage is connected to a 1 µF capacitor through an ac ammeter. The reading of the ammeter will be

### Choices

Choice (4) Response

a.

10 mA

b.

20 mA

c.

80 mA

d.

40 mA

## Question number: 4

» Electromagnetic Induction & Alternating Currents » Peak and RMS Value of AC

Edit
MCQ▾

### Question

The frequency of an alternating voltage is 50 cycles/sec and its amplitude is 120 V. Then the r. m. s value of voltage is

### Choices

Choice (4) Response

a.

84.8V

b.

101.3V

c.

56.5V

d.

70.7V

Developed by: