# Electromagnetic Induction & Alternating Currents-Alternating Currents (NEET Physics): Questions 5 - 9 of 9

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## Passage

If the voltage in an a c circuit is represented by the eq. , , then

## Question number: 5 (1 of 1 Based on Passage) Show Passage

» Electromagnetic Induction & Alternating Currents » Alternating Currents

MCQ▾

### Question

Frequency of ac is

### Choices

Choice (4) Response

a.

b.

50 Hz

c.

75 Hz

d.

## Question number: 6

» Electromagnetic Induction & Alternating Currents » Alternating Currents

Assertion-Reason▾

### Assertion (Ꭺ)

An alternating current does not show any magnetic effect.

### Reason (Ꭱ)

Alternating current varies with time.

### Choices

Choice (4) Response

a.

Ꭺ is false but Ꭱ is true

b.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

c.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

d.

Both Ꭺ and Ꭱ are false

## Question number: 7

» Electromagnetic Induction & Alternating Currents » Alternating Currents

MCQ▾

### Question

In an ac circuit . The time required for the current to achieve its peak value will be

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 8

» Electromagnetic Induction & Alternating Currents » Alternating Currents

Assertion-Reason▾

### Assertion (Ꭺ)

A sinusoidal alternating current does not show any magnetic effects.

### Reason (Ꭱ)

The average value of alternating current is zero.

### Choices

Choice (4) Response

a.

Ꭺ is false but Ꭱ is true

b.

Both Ꭺ and Ꭱ are false

c.

Ꭺ is true but Ꭱ is false

d.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

## Question number: 9

» Electromagnetic Induction & Alternating Currents » Alternating Currents

Assertion-Reason▾

### Assertion (Ꭺ)

An alternating current is more dangerous than the direct steady current.

### Reason (Ꭱ)

The frequency of the alternating current is injurious the human body.

### Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

b.

Ꭺ is true but Ꭱ is false

c.

Both Ꭺ and Ꭱ are false

d.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

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