During a 74-ms interval, a change in the current in a primary coil occurs. This change leads to the appearance of a 6.6-mA current in a nearby secondary coil. The secondary coil is part of a circuit in which the resistance is 12 Q. The mutual inductance between the two coils is 3.2 mH. What is the change in the primary current? Alp=

Q: An emf of 0.60 V is induced across a coil when the current through it changes uniformly from 0.30 to…

A:

Q: 1. A transmission line that has a resistance per unit length of 4.50 x 104 2/m is to be used to…

A:

Q: The current in a coil changes steadily from 1.3 A to 2.5 A in the opposite direction, in 0.12 s. The…

A:

Q: An emf of 0.80 Vv is induced across a coil when the current through it changes uniformly from 0.30…

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: An emf of 86.5 mV is induced in the windings of a coil when the current in a nearby coil is…

A: The emf induced in the windings of a coil is given by Where e = emf induced, M = Mutual inductance…

Q: A high-field superconducting magnet in an MRI machine has an inductance of 60.0 H. If this magnet…

A: Number: 0.055166    Units: AExplanation:

Q: An emf of 9.7 x 10-3 V is induced in a coil while the current in a nearby coil is decreasing at a…

A: Given that,The mutual inductance of two coils is 3.6×10-3 Hwhere, ε=9.7×10-3 Vand dIdT=2.7 A/sEmf of…

Q: An emf of 0.50 V is induced across a coil when the current through it changes uniformly from 0.20 A…

A: solution is given by

Q: Two coils of wire are placed close together. Initially, a current of 3.80 A exists in one of the…

A: Given: The current in the coil is I=3.80 A. The time for which current revolve in the coil is…

Q: Two coils are placed close together in a physics lab to demonstrate Faraday’s law of induction. A…

A: Change on current, dI =5 A time, t =1 ms  emf = 9 V

Q: The circuit shown in the figure contains a resistor and a solenoid. A battery is connected by…

A:

Q: The current I flowing rightward through inductor L is at a steady rate of 0.1280 A/s. The magnitude…

A: GivenThe steady rate of flow of current ,dIdt=0.1280  A/sεL=0.0160 V

Q: Two coils are placed close together in a physics lab to demonstrate Faraday's law of induction. A…

A:

Q: A solenoid 40 cm long is wound with 800 turns of wire. The cross-sectional area of the coil is 1.5…

A: Answer                0.302

Q: The current in a coil drops from 4.2 A to 2.8 A in 0.51 s. If the average emf induced in the coil is…

A: Given: The initial current in the coil is 4.2 A. The final current in the coil is 2.8 A. The time…

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

A:

Q: n inductance of 3 H and a wire resistance of 15 Ω. How long will it take for the current to reach…

A: GivenL=3 HR=15 Ω

Q: An ac electrical generator is made by turning a flat coil in a uniform constant magnetic field of…

A:

Q: The circuit below contains an inductor (L = 3 H) with an internal resistance R3 = 60 ohm. The other…

A: As soon as the switch is on, the current in inductor will be zero. i3=0 rest i1 and i2 will be in…

Q: The self-inductance of the circuit in the figure below is 9.10 x 10-8 H. Find the back emf when the…

A:

Q: The current in a coil drops from 3.8 A to 1.8 A in 0.51 s. If the average emf induced in the coil is…

A:

Q: An emf of 121.5 mV is induced in the windings of a coil when the current in a nearby coil is…

A: The formula for the induced emf in term of mutual inductance is:

Q: EMF of 0.218V is induced in a coil when the current in a second coil is changing at a rate of…

A:

Q: What is the magnitude of the rate at which the current though a 0.30-H coil is changing if an emf of…

A:

Q: A 12 V DC power supply is connected to the primary coil of a transformer. The primary coil has 100…

A:

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…