1. A long straight wire carries a current of 110 A. Point M has a magnitude of magnetic field of 5x105 T from a certain distance from this wire. Calculate the distance.

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Chapter20: Induced Voltages And Inductance
Section: Chapter Questions
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1.
A long straight wire carries a current of 110 A. Point M has a magnitude of magnetic field
of 5x105 T from a certain distance from this wire. Calculate the distance.
2.
The magnetic flux of a solenoid of 500 turns is 1.65x107 Wb. If the current flowing in the
solenoid is 7.5 mA, determine
a. Inductance of the solenoid
b. Energy stored in the solenoid.
Suppose a wire of length 0.1 m slides on the U-shaped wire with a speed of 2.5 m/s. The
3.
total resistance of the loop is 0.03 Q and the magnetic field is 0.6 T pointing into the page.
Determine the:
a. magnitude of the induce current.
b. magnitude of the force acting on the wire.
c. mechanical power to keep the wire moving.
The input to the primary coil of a transformer is 120 V while the current in the secondary
4.
coil is 0.1 A. Calculate the voltage across this coil when 60 W of power is delivered to the
circuit attached to the secondary coil. Determine the number of turns in the secondary
coil if the primary coil has 20 turns.
Transcribed Image Text:1. A long straight wire carries a current of 110 A. Point M has a magnitude of magnetic field of 5x105 T from a certain distance from this wire. Calculate the distance. 2. The magnetic flux of a solenoid of 500 turns is 1.65x107 Wb. If the current flowing in the solenoid is 7.5 mA, determine a. Inductance of the solenoid b. Energy stored in the solenoid. Suppose a wire of length 0.1 m slides on the U-shaped wire with a speed of 2.5 m/s. The 3. total resistance of the loop is 0.03 Q and the magnetic field is 0.6 T pointing into the page. Determine the: a. magnitude of the induce current. b. magnitude of the force acting on the wire. c. mechanical power to keep the wire moving. The input to the primary coil of a transformer is 120 V while the current in the secondary 4. coil is 0.1 A. Calculate the voltage across this coil when 60 W of power is delivered to the circuit attached to the secondary coil. Determine the number of turns in the secondary coil if the primary coil has 20 turns.
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