n the circuit shown in the figure the coil has an inductance L = 0.33 H and a resistance of 21 Ω . The resistor R has a resistance of 47 Ω . The battery has a voltage V = 4.0 V. The switch S has been open for a long time. What will be the current though the inductor 0.0097 s (2 time constants) after the switch S is closed?

Q: An LR circuit is hooked up to a battery which the switch initially open. The resistance in the…

A: Formula of current passing through the LR circuit is as follows: I=VsR1-e-tRL…

Q: A battery of emf E is connected in series with a resistor, an inductor L. and a switch S. A…

A:

Q: mer consists of 295 primary windings and lary windings. ▼ If the potential difference across the…

A: winding in primary coil (N1) = 295 winding in secondry coil (N2) = 834 Potential difference across…

Q: Where a 44 V battery is connected to three resistors and an inductor with values R1 = 96 Ω, R2 = 24…

A: An inductor has the tendency to resist the change in current in the circuit. When a switch is…

Q: An RL circuit has an emf source of 28 v, a 62 resistor, a 38 H inductor, and a switch. At what rate,…

A: Given:- In the RL circuit  The emf of the source voltage V = 28 V  The resistance R = 6  ohm  The…

Q: A 2.4 Henry inductor and a 187Ω resistor are connected in series with a 24V battery.  A long time…

A:

Q: In the circuit shown in the figure, the inductor has inductance L = 4.00 H and negligible internal…

A:

Q: An inductor that has an inductance of 15.0 H and a resistance of 30.0 Q is connected across a 100-V…

A: An RL circuit is made by connecting a resistor and an inductor in series or in parallel. The…

Q: In the circuit shown in the figure the coil has an inductance L = 0.35 H and a resistance of 23 Ω.…

A:

Q: A circuit consists of a 35 N resistor and a 580 mH inductor connected in series to a 12 V battery.…

A:

Q: A circuit consists of a large electromagnet that has an inductance of 48.0 H and a resistance of…

A: Inductance (L) = 48 H Resistance (R) = 7.9 ohm Vb = 250 V Maximum current (Im) = VbR= 2507.9= 31.645…

Q: A circuit consists of a 0.8 H inductor and a 3.5 ohm resistor.  At t = 0 the current through the…

A:

Q: Consider a 23 mH inductor that has a resistance of 4.15 Ω. Time constant is 0.00554. If the…

A: Given that  L=23 mH R=4.15Ω Time constant τ=0.00554 s

Q: The circuit shown in the diagram has a switch which is turned on at time t = 0, and it is known that…

A: Given, Q0=2.0 μCC=1.0 nFL=10.0 μH

Q: The capacitor in the circuit shown below is initially uncharged. The switch is closed at t = 0 s.…

A: The objective of the question is to find the current in the circuit at a specific time after the…

Q: During a 58-ms interval, a change in the current in a primary coil occurs. This change leads to the…

A:

Q: The capacitor in the circuit shown below is initially uncharged. The switch is closed at t = 0 s.…

A:

Q: If L-1 henry, R=1 ohm, and C= 4 farads, find a formula for the charge when (a) Q(0) = 0 and Q (0) -…

A:

Q: A fully-charged capacitor with C = 1137F is connected in series with a resistor (w/ R = 867N) and an…

A:

Q: 6.54 H inductor and a 85.4 ohm resistor are connected in series and the circuit is connected to a…

A: Inductance, L = 6.54 H  Resistance, R = 85.4 ohm Voltage, V = 14.8 V  Time, t = 2.65 ms = 0.00265 s

Q: a circuit having an inductance of L=2mH has a current that varies with time as I=t^3e^-t. find the…

A: Emf induced can be given by, ∈=LdIdt where L is inductance and I is current and t is time.  To be…

Q: A coil has an Inductance of 50μH. What voltage is induced across the coil when the rate of change of…

A: Given, Inductance of coil, L = 50 μH rate of change of current, dIdt = 10000 As

Q: A transformer is used to provide voltage to a neon sign. The input voltage is 120 V and the output…

A: Given, Secondary voltage = 600v Primary voltage = 120 v primary turns = 300 primary current = 300A…

Q: generator is connected across the primary coil (Np = 150 turns) of a transformer, while a resistance…

A: Transformers works on the principle of mutual induction.  Power in primary and secondary is same for…

Q: A circuit consists of a large electromagnet that has an inductance of 48.0 H and a resistance of…

A:

Q: During a 74-ms interval, a change in the current in a primary coil occurs. This change leads to the…

A:

Q: A 2.2 Henry inductor and a 177Ω resistor are connected in series with a 24V battery.  A long time…

A: The inductance of the inductor L=2.2 H. The resistance of the resistor R=177 Ω. The voltage of the…

Q: A circuit consists of a 0.80 H inductor and a 3.5 ohm resistor.  At t = 0 the current through the…

A: The current through the inductor can be written as It=I0e-RtL…

Q: An electric current contains a battery that produces a voltage of 60 voltsV , a resistor with a…

A: The objective of the question is to express the time 't' as a function of the current 'I' using the…

Q: A resistor of resistance R = 10 Ω is connected in series with an inductor of L = 15 mH. The RL…

A:

Q: Two resistors of resistance R1and R2 are placed in series across a battery with voltage V, such that…

A:

Q: A voltage of 0.35 V is induced across a coil when the current through it changes uniformly from 0.1…

A:

Q: Where a 44 V battery is connected to three resistors and an inductor with values R1 = 96 Ω, R2 = 24…

A: Current through the R3 will be 0.324 ampere.

Electromagnets

The word "electromagnet" is composed of two words, ‘electro’ and ‘magnet’. It is a type of magnet in which an electric current helps in the generation of a magnetic field. Electromagnets usually consist of two major parts, wire and a coil around which the wire is wound. This is called a solenoid. When an electric current is allowed to pass through the coiled wire, the electric current produces a magnetic field. This magnetic field is present only when current is passing through the wire.