Omkari

Ashok0210

Asked: March 5, 2021In: Class 12 Physics

An LC circuit contains a 20 mH inductor and a 50 μF capacitor with an initial charge of 10 mC. The resistance of the circuit is negligible. Let the instant the circuit is closed be t = 0. (a) What is the total energy stored initially? Is it conserved during LC oscillations? (b) What is the natural frequency of the circuit? (c) At what time is the energy stored (i) completely electrical (i.e., stored in the capacitor)? (ii) completely magnetic (i.e., stored in the inductor)? (d) At what times is the total energy shared equally between the inductor and the capacitor? (e) If a resistor is inserted in the circuit, how much energy is eventually dissipated as heat?

Class 12 Physics CBSE and UP Board Alternating Current Chapter-7 Exercise 7.12 NCERT Solutions for Class 12 Physics Chapter 7 Question 12

Ashok0210

Asked: March 5, 2021In: Class 12 Physics

Figure 7.21 shows a series LCR circuit connected to a variable frequency 230 V source. L = 5.0 H, C = 80μF, R = 40 Ω (a) Determine the source frequency which drives the circuit in resonance. (b) Obtain the impedance of the circuit and the amplitude of current at e ^ the resonating frequency. (c) Determine the rms potential drops across the three elements of the circuit. Show that the potential drop across the LC combination is zero at the resonating frequency.

Class 12 Physics CBSE and UP Board Alternating Current Chapter-7 Exercise 7.11 NCERT Solutions for Class 12 Physics Chapter 7 Question 11

Ranamita

Asked: March 5, 2021In: Class 8 Maths

Solve the following equations and check your results: 2x/3+1=7x/15+3

NCERT Solutions for Class 8 Mathematics Chapter 2 Important NCERT Questions Linear Equations in one Variable Chapter 2 Exercise 2.3 NCERT Books for Session 2022-2023 CBSE Board Questions No: 8

Ashok0210

Asked: March 5, 2021In: Class 12 Physics

Keeping the source frequency equal to the resonating frequency of the series LCR circuit, if the three elements, L, C and R are arranged in parallel, show that the total current in the parallel LCR circuit is minimum at this frequency. Obtain the current rms value in each branch of the circuit for the elements and source specified in Exercise 7.11 for this frequency.

Class 12 Physics CBSE and UP Board Alternating Current Chapter-7 Exercise 7.17 Additional Exercise NCERT Solutions for Class 12 Physics Chapter 7 Question 17

Ranamita

Asked: March 5, 2021In: Class 8 Maths

Aman’s age is three times his son’s age. Ten years ago he was five times his son’s age. Find their present ages.

NCERT Solutions for Class 8 Mathematics Chapter 2 Important NCERT Questions Linear Equations in one Variable Chapter 2 Exercise 2.4 NCERT Books for Session 2022-2023 CBSE Board Questions No: 10

Ashok0210

Asked: March 5, 2021In: Class 12 Physics

Obtain the answers to (a) and (b) in Exercise 7.15 if the circuit is connected to a 110 V, 12 kHz supply? Hence, explain the statement that a capacitor is a conductor at very high frequencies. Compare this behaviour with that of a capacitor in a dc circuit after the steady state.

Class 12 Physics CBSE and UP Board Alternating Current Chapter-7 Exercise 7.16 Additional Exercise NCERT Solutions for Class 12 Physics Chapter 7 Question 16

Ranamita

Asked: March 5, 2021In: Class 8 Maths

A grandfather is ten times older than his granddaughter. He is also 54 years older than her. Find their present ages.

NCERT Solutions for Class 8 Mathematics Chapter 2 Important NCERT Questions Linear Equations in one Variable Chapter 2 Exercise 2.4 NCERT Books for Session 2022-2023 CBSE Board Questions No: 9

Ranamita

Asked: March 5, 2021In: Class 8 Maths

Half of a herd of deer are grazing in the field and three fourths of the remaining are playing nearby. The rest 9 are drinking water from the pond. Find the number of deer in the herd.

NCERT Solutions for Class 8 Mathematics Chapter 2 Important NCERT Questions Linear Equations in one Variable Chapter 2 Exercise 2.4 NCERT Books for Session 2022-2023 CBSE Board Questions No: 8

Ranamita

Asked: March 5, 2021In: Class 8 Maths

Hasan buys two kinds of cloth materials for school uniforms, shirt material that costs him ₹50 per meter and trouser material that costs him ₹90 per meter. For every 2 meters of the trouser material he buys 3 meters of the shirt material. He sells the materials at 12% and 10% respectively. His total sale is ₹36,000. How much trouser material did he buy?

NCERT Solutions for Class 8 Mathematics Chapter 2 Important NCERT Questions Linear Equations in one Variable Chapter 2 Exercise 2.4 NCERT Books for Session 2022-2023 CBSE Board Questions No: 7

Ashok0210

Asked: March 5, 2021In: Class 12 Physics

A 100 μF capacitor in series with a 40 Ω resistance is connected to a 110 V, 60 Hz supply. (a) What is the maximum current in the circuit? (b) What is the time lag between the current maximum and the voltage maximum?

Class 12 Physics CBSE and UP Board Alternating Current Chapter-7 Exercise 7.15 Additional Exercise NCERT Solutions for Class 12 Physics Chapter 7 Question 15

Omkari

Solve the following equations and check your results: 2x/3+1=7x/15+3

Aman’s age is three times his son’s age. Ten years ago he was five times his son’s age. Find their present ages.

Obtain the answers to (a) and (b) in Exercise 7.15 if the circuit is connected to a 110 V, 12 kHz supply? Hence, explain the statement that a capacitor is a conductor at very high frequencies. Compare this behaviour with that of a capacitor in a dc circuit after the steady state.

A grandfather is ten times older than his granddaughter. He is also 54 years older than her. Find their present ages.

Half of a herd of deer are grazing in the field and three fourths of the remaining are playing nearby. The rest 9 are drinking water from the pond. Find the number of deer in the herd.

A 100 μF capacitor in series with a 40 Ω resistance is connected to a 110 V, 60 Hz supply. (a) What is the maximum current in the circuit? (b) What is the time lag between the current maximum and the voltage maximum?

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