A circular coil of 300 turns and radius 10 cm is connected to a current integrator....

A circular coil of 300 turns and radius 10 cm is connected to a current integrator. The total resistance of the circuit is 45 Ω. The plane of the coil is originally aligned perpendicular to the earth’s magnetic field at some point. When the coil is rotated through 90◦ , the charge that passes through the current integrator is measured to be 9.2 µC. Calculate the magnitude of the earth’s magnetic field at that point. Answer in units of µT

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genius_generous answered 2 years ago

A circular coil of 144 turns has a radius of 1.54 cm. (a) Calculate the current...

A circular coil of 144 turns has a radius of 1.54 cm. (a) Calculate the current that results in a magnetic dipole moment of magnitude 2.13 A

A circular coil of wire with radius 4 cm and 20 turns is placed in a...

A circular coil of wire with radius 4 cm and 20 turns is placed in a uniform magnetic field of magnitude 0.3 T. The magnetic field is parallel to the area vector; i.e. perpendicular to the plane of the coil. a) What is the magnetic flux through the coil? b) The magnetic field is decreased to 0 T in 0.1 s. What is the magnitude of the emf induced in the coil during this time interval? c) If the coil...

circular coil consists of 100 turns and has a radius of 20 cm. It is placed...

circular coil consists of 100 turns and has a radius of 20 cm. It is placed in a region of space in which there is a magnetic field of 0.5 T. If the coil is initially perpendicular to the magnetic field, find the magnitude of the emf induced if in 0.2 sec: a) the coil rotates 90 ° b) the coil rotates 180 ° c) The field is reduced to zero

A small circular coil with a radius of 1.00 cm has 20 turns and carries a...

A small circular coil with a radius of 1.00 cm has 20 turns and carries a current. A magnetic field probe is located somewhere along the coil's central axis, much farther from the coil's center than the coil's radius. A. The probe indicates that the magnetic field points down the axis, towards the center of the coil. Looking down the axis towards the coil, the current must be flowing which way? (clockwise or counterclockwise) B. At a distance of 3.0...

A flat circular coil composed of 120 turns has a radius of 17.0 cm. Perpendicular to...

A flat circular coil composed of 120 turns has a radius of 17.0 cm. Perpendicular to the surface of the coil is a 3.50-T magnetic field. What is the induced emf in this coil, if the magnetic field reverses direction in 0.25 s?

A closely wound, circular coil with radius 2.10cm has 830 turns. A. What must the current...

A closely wound, circular coil with radius 2.10cm has 830 turns. A. What must the current in the coil be if the magnetic field at the center of the coil is 5.0010-2 B. At what distance x from the center of the coil, on the axis of the coil, is the magnetic field half its value at the center?

A coil of 15 turns and radius 10.0 cm surrounds a long solenoid of radius 2.10...

A coil of 15 turns and radius 10.0 cm surrounds a long solenoid of radius 2.10 cm and 1.00 103 turns/meter (see figure below). The current in the solenoid changes as I = 4.00 sin 120 t, where I is in amperes and t is in seconds. Find the induced emf (in volts) in the 15-turn coil as a function of time. = ?

A circular coil (radius = 0.40 m) has 160 turns and is in a uniform magnetic...

A circular coil (radius = 0.40 m) has 160 turns and is in a uniform magnetic field. If the orientation of the coil is varied through all possible positions, the maximum torque on the coil by magnetic forces is 0.16 Nm when the current in the coil is 4.0 mA. What is the magnitude of the magnetic field? 0.50 T 1.6 T 0.21 T 1.2 T 0.37 T

A circular coil with a diameter of 25.0 cm and 158 turns rotates about a vertical...

A circular coil with a diameter of 25.0 cm and 158 turns rotates about a vertical axis with an angular speed of 1230 rpm . The only magnetic field in this system is that of the Earth. At the location of the coil, the horizontal component of the magnetic field is 3.81×10−5T, and the vertical component is 2.85×10−5T. Find the maximum emf induced in the coil. Answer in mV

A circular coil (830 turns, radius = 0.087 m) is rotating in a uniform magnetic field....

A circular coil (830 turns, radius = 0.087 m) is rotating in a uniform magnetic field. At t = 0 s, the normal to the coil is perpendicular to the magnetic field. At t = 0.021 s, the normal makes an angle of 45o with the field because the coil has made one-eighth of a revolution. An average emf of magnitude 0.075 V is induced in the coil. Find the magnitude of the magnetic field at the location of the...

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