Recent questions tagged inductance

Two coaxial solenoids are made by winding their insulated wire over a pipe of cross sectional area $A= 10\;cm^2$ length $20\;cm$ .One of the solenoids has 200 turns and another 400 turns. the mutual inductance is .

asked Mar 27, 2014 by meena.p

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Two induction coil of inductance $L_1$ and $L_2$ are separated by a considerable distance. On connectivity them in series the equivalent inductance is

asked Mar 27, 2014 by meena.p

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A coil of inductance $L= 150\;mH$ and resistance $R= 70\;m \Omega$ is connected to a voltage source. How soon will the voltage attain $50\%$ of initial value

asked Mar 25, 2014 by meena.p

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In the circuit given the switch is closed at time $t=0$ What is the amount of charge passing through the battery in are time constant ?

asked Mar 24, 2014 by meena.p

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In the given circuit shown : $L= 200\;mH;$ Emp of battery $E= 12 V$ $R_1=R_2=2 \Omega$ the internal resistance of battrey is negligible . The potential drop across the inductance L after time t.

asked Mar 24, 2014 by meena.p

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A coil of inductance $84\;mH$ and resistance $8 \Omega$ is connected to $12 V$ battery. The current in the coil is 1 A at approximately

asked Mar 24, 2014 by meena.p

1 answer

A uniformly would soleacidal (ie) of self inductance $8 \times 10^{-4}\;H$ and resistance $45\;L$ is broken into two identical coils. These colis are then connected in parallel across a battery of $10V$ of negligible resistance the time constant for this circuit is

asked Mar 24, 2014 by meena.p

1 answer

A inductor $(L= 50 \;mH)$ and resistor of $R =100\;\Omega$ and a battery , of emf 100 V is initially connected in series. Then the battery is short circuited , the current flowing 1 ms after the short circuit is

asked Mar 21, 2014 by meena.p

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A current $I= 10 \sin (100 \pi t)$ ampere is passed in first coil which induces a maximum emf of $5 \pi$ volts in second coil. The mutual inductance M is

asked Mar 21, 2014 by meena.p

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Calculate the mutual inductance between two coils when a current of 4 A changing to 8 A in 0.5 s in one coil, induces an emf of 50 mV in the other coil.

asked Mar 12, 2014 by balaji.thirumalai

1 answer

The variation of current versus time is \[\] The potential difference across a 2H inductor as function of time is shown in figure. At time $t=0$, current is zero.

asked Mar 3, 2014 by thanvigandhi_1

1 answer

Current at $t = 1 \: s$ is

asked Mar 1, 2014 by thanvigandhi_1

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Area under $V_L - t$ graph gives

asked Mar 1, 2014 by thanvigandhi_1

1 answer

$S.I$. unit of inductance i.e, henry can be written as Weber divided by

asked Feb 25, 2014 by thanvigandhi_1

1 answer

An ideal coil of $10H$ is connected in series with a resistance of $5 \Omega$ and a battery of $ 5V$. 2 second after the connection is made the current flowing in amperes in the circuit is

asked Feb 16, 2014 by thanvigandhi_1

1 answer

An inductor $(L = 100\: mH)$, a resistor $(R = 100\Omega)$ and a battery $(E = 100 \: V)$ are initially connected in series as shown in the figure. After a long time the battery is disconnected after short circuiting the points A and B. The current in the circuit $1\: ms$ after the circuit is

asked Feb 16, 2014 by thanvigandhi_1

1 answer

Which of the following units denote the dimensions of $\large\frac{ML^2}{Q^2}$ , where $Q$ denotes electric charge

asked Feb 15, 2014 by thanvigandhi_1

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In an LCR circuit as shown below both switches are open initially . Now switch $S_1$ is closed $S_2$ kept open. ( q is charge on the capacitor and $\tau = RC$ is capacitive time constant ) which of the following statement is correct ?

asked Feb 15, 2014 by thanvigandhi_1

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In the circuit shown below, the key K is closed at $ t = 0$. The current through the battery is

asked Feb 13, 2014 by thanvigandhi_1

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In an $LCR$ circuit as shown below both switches are open initially. Now switch $S1$ is closed, $S2$ kept open. ($q$ is charge on the capacitor and $ \tau = RC$ is capacitive time constant). Which of the following statement is correct?

asked Feb 8, 2014 by thanvigandhi_1

1 answer

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