Q. 21: When a current of 2A is passed through a coil of 100 turns, the flux associated with is 5 x 10 Wb/turn. The self inductance of the 5 coil is (CET-2010)
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: An induced EMF of 16 V exists in a coil when the current in the coil changes at a rate of 42 A/s.…
A: Given data: Induced EMF is, e=16 V. Rate of change of current is, dIdt=42 A/s.
Q: An emf of 9.7mV is induced in a coil while the current in a nearby coil is decreasing at a rate of…
A:
Q: A direct current of 25A creates a flux of 1.4 X 10-4 Wb in a coil of 500 turns. What is the…
A: Given that, Current I = 25 A Flux ϕ=1.4×10-4 Wb Number of turns = 500
Q: You wish to invent a sparker for lightning gas burners. A 1.5-A current from a battery runs through…
A:
Q: An induced EMF of 20 mV is measured across a coil of 50 closely wound turns while the current…
A: Induced Emf ε=20 mV Number of Turns N=50 Initial Current Ii=0.0 A Final CurrentIf=5.0 A Time…
Q: Two identical coils are wound on a ring-shaped iron core that has a relative permeability of 500.…
A: relative permeability, ur = 500 Number of turns= N1= N2= 100 Area= 3 × 10-4 m² Length= 0.2 m
Q: A 12H inductors carries a current of 2A. At what rate must the current be changed to produce a 60V…
A: The equation for the rate at which the current has to be changed can be obtained as
Q: A coil of wire with 10 turns and a radius of 1.5 cm is oriented with the plane of the coil…
A:
Q: Ex. 7: When 100V D.C. is applied across a coil, a current of 1A flows through it. When 100 V A.C. of…
A: We need to compute-Resistance (R)=?Impedance (Z)=?Self Inductance (L)=?The data given as-Applied emf…
Q: The current in an inductive coil changes at 30A /s and the back EMF is 3V Calculate the inductance…
A: Given value--- The current in an inductive coil changes at 30A /s. the back EMF is 3V. We have to…
Q: Ex. 65 : When a 100 volt. D.C. is applied across a coil, a current of 1 amp flows through it. When a…
A: To find-(1) Resistance of coil (2) Inductance of coilGiven-E=D.C. voltage=100 VI=1 AErms=100 VF=50…
Q: A swith controls the current in a circuit that has large inductance. If the switch is open but near…
A: Inductor doesn’t allow sudden change in current. When the switch is initially closed, current is…
Q: The current in a coil changes from 3-70 A to -goA in the same direction in 0.510s. It the Werage emf…
A:
Q: inductor: € == dI dt Lenz's Law: The induced EMF will fight the change in current through an - Ld…
A: Since you posted two questions, we will solve only first question and for the solutions of other…
Q: The current in an inductor decreases linearly from 2 mA to zero in 4 ms. Calculate the average emf…
A:
Q: An induced EMF of 16 V exists in a coil when the current in the coil changes at a rate of 42 A/s.…
A: Given:Induced emf, E = 16VRate of change of current, didt = 42 A/sAsked:Self inductance of the coil,…
Q: The current in an inductor decreases linearly from 2 mA to zero in 4 ms. Calculate to find the…
A: The initial value of the current is 2 mA. The final value of the current is 0. The time taken to…
Q: Suppose a 57.5 cm long, 11.5 cm diameter solenoid has 1000 loops. Part (a) Calculate the…
A: Answer:- Given The length of the solenoid(xo) = 57.5 cm = 0.575 m The diameter of the…
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: A 4-79 permalloy solenoid coil needs to produce a minimum inductance of 1.5 Wb/m2 . If the maximum…
A:
Q: a) Calculate the self-inductance (in mH) of a 54.0 cm long, 10.0 cm diameter solenoid having 1000…
A: Length of the solenoid () = 54.0 cm = 0.54 mDiameter of the solenoid () = 10.0 cm = 0.1 mNumber of…
Q: The current in a coil drops from 3.8 A to 1.9 A in 0.52 s. If the average emf induced in the coil is…
A: The self induction of the coil is 3.28 mH
Q: Two 52-turn coils are magnetically coupled so that a 7.12-A current in one coil produces a magnetic…
A:
Q: A 7.50 nF capacitor is charged to 12.0 V, then disconnectedfrom the power supply and connected in…
A: Given: The value of the capacitor is 7.50 nF. The voltage is 12 V. The time…
Q: A current 10 A in the primary of a transformer is reduced to zero at the uniform rate in 0.1 second.…
A:
Q: ) What is the inductance of a coil if it produces an emf of 8.5V when the current in it changes…
A: Given: The induced emf is 8.5 V. The initial current is -20 mA. The final current is 24 mA. The time…
Q: Induced potential difference of 5V is developed across a coil when the current flowing through it…
A: Given: The induced potential difference, V= 5 v Current decrease at the rate of di/dt=-25 A/s A…
Q: The current in a coil drops from 3.5 A to 2.0 A in 0.50 s. Ifthe average emf induced in the coil is…
A: Writing the formula for induced emf:
Q: ... .. In a transformer the mutual inductance of two coils is 0.3 H where as the self inductance of…
A:
Q: A coil having an inductance of 200 mH is magnetically coupled to another coil having an inductance…
A: Given data, Inductance of 1st coil L1=200 mH. Inductance of 2nd coil L2=500 mH. Coefficient of…
Q: When 100V D.C. is applied across a coil, a current of 1A flows through it. When 100 V A.C. of…
A:
Q: A current is changing at the rate of 5A/s in one coil, induces an e.m.f. of 4v in the neighbouring…
A: We have provided information- es=4 Vdipdt=5A/sM=?
Step by step
Solved in 2 steps