Q. 2

Expert-verified
Found in: Page 923

### Physics for Scientists and Engineers: A Strategic Approach with Modern Physics

Book edition 4th
Author(s) Randall D. Knight
Pages 1240 pages
ISBN 9780133942651

# A resistor is connected across an oscillating emf. The peak current through the resistor is What is the peak current if:a. The resistance is doubled?b. The peak emf is doubled?c. The frequency is doubled?

(a.)

(b.)

(c.)

See the step by step solution

## Part (a) Step1: Given Information

We are given that A resistor is connected across an oscillating emf. The peak current through the Resistor is .

And we need to find that What is the peak current if resistance is doubled?

## Part (a) Step 2: Explanation

In this q we have to find what is the value of max current in circuit while changing the value of

It is based on RLC circuit

We know that ,

The maximum current of RLC circuit is

Now we see that I is directly Proportional to and inversely proportional to

So ,

a). If is doubled then will be halved of present value so

Hence final answers of a) is

## Part (b) Step 1: Given information

We are given that A resistor is connected across an oscillating emf. The peak current through the Resistor is .

And we need to find that what is the peak current if resistance is doubled?

## Part (b)  Step 2 : Explanation

In this q we have to find what is the value of max current in circuit while changing the value of

It is based on RLC circuit

We know that ,

The maximum current of RLC circuit is

Now we see that I is directly Proportional to and inversely proportional to

So ,

b). If is doubled then will be double of present value so

Hence final answers of b) is

## Part (c) Step 1: Given Information

We are given that A resistor is connected across an oscillating emf. The peak current through the Resistor is .

We need to find that what is the peak current if resistance is doubled?

## Part (c)  Step 2 : Explanation

In this q we have to find what is the value of max current in circuit while changing the value of

It is based on RLC circuit

We know that ,

The maximum current of RLC circuit is

Now we see that I is directly Proportional to and inversely proportional to

So ,

c). If is doubled then will be same as present value so

Hence final answers of c) is