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Q. 2

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Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
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Short Answer

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

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

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