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Ashok0210

Asked: March 5, 2021In: Class 12 Physics

Suppose the circuit in Exercise 7.18 has a resistance of 15 Ω. Obtain the average power transferred to each element of the circuit, and the total power absorbed.

Class 12 Physics CBSE and UP Board Alternating Current Chapter-7 Exercise 7.19 Additional Exercise NCERT Solutions for Class 12 Physics Chapter 7 Question 19

Ashok0210

Asked: March 5, 2021In: Class 12 Physics

A circuit containing a 80 mH inductor and a 60 μF capacitor in series is connected to a 230 V, 50 Hz supply. The resistance of the circuit is negligible. (a) Obtain the current amplitude and mis values. (b) Obtain the rms values of potential drops across each element. (c) What is the average power transferred to the inductor? (d) What is the average power transferred to the capacitor? (e) What is the total average power absorbed by the circuit? [‘Average’ implies ‘averaged over one cycle’.]

Class 12 Physics CBSE and UP Board Alternating Current Chapter-7 Exercise 7.18 Additional Exercise NCERT Solutions for Class 12 Physics Chapter 7 Question 18

Ashok0210

Asked: March 5, 2021In: Class 12 Physics

A radio can tune over the frequency range of a portion of MW broadcast band: (800 kHz to 1200 kHz). If its LC circuit has an effective inductance of 200μH, what must be the range of its variable capacitor? [Hint: For tuning, the natural frequency i.e., the frequency of free oscillations of the LC circuit should be equal to the frequency of the radio wave.]

Class 12 Physics CBSE and UP Board Alternating Current Chapter-7 Exercise 7.10 NCERT Solutions for Class 12 Physics Chapter 7 Question 10

Ashok0210

Asked: March 5, 2021In: Class 12 Physics

A series LCR circuit with R = 20 Ω, L = 1.5 H and C = 35 μF is connected to a variable frequency 200 V ac supply. When the frequency of the supply equals the natural frequency of the circuit, what is the average power transferred to the circuit in one complete cycle?

Class 12 Physics CBSE and UP Board Alternating Current Chapter-7 Exercise 7.9 NCERT Solutions for Class 12 Physics Chapter 7 Question 9

Ashok0210

Asked: March 5, 2021In: Class 12 Physics

Obtain the answers (a) to (b) in Exercise 7.13 if the circuit is connected to a high frequency supply (240 V, 10 kHz). Hence, explain the statement that at very high frequency, an inductor in a circuit nearly amounts to an open circuit. How does an inductor behave in a dc circuit after the steady state?

Class 12 Physics CBSE and UP Board Alternating Current Chapter-7 Exercise 7.14 Additional Exercise NCERT Solutions for Class 12 Physics Chapter 7 Question 14

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Suppose the circuit in Exercise 7.18 has a resistance of 15 Ω. Obtain the average power transferred to each element of the circuit, and the total power absorbed.

A series LCR circuit with R = 20 Ω, L = 1.5 H and C = 35 μF is connected to a variable frequency 200 V ac supply. When the frequency of the supply equals the natural frequency of the circuit, what is the average power transferred to the circuit in one complete cycle?

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