A circular loop of wire, 8.0 cm in diameter and having 600 turns is placed outside and close to one end of a relatively large solenoid with variable current. The solenoid is sufficiently large such that the magnetic field it generates is homogeneous over the area of the loop. Two ends of the loop are connected to a voltmeter that measures the voltage induced inside the loop. When the solenoid is powered up the magnetic field changes from zero to final steady value of 0.5 T. How quickly must the magnetic field be switched on so that the induced voltage in the lop does no exceed 12 V.

A circular loop of wire, 8.0 cm in diameter and having 600 turns is placed outside and close to one end of a relatively large solenoid with variable current. The solenoid is sufficiently large such that the magnetic field it generates is homogeneous over the area of the loop. Two ends of the loop are connected to a voltmeter that measures the voltage induced inside the loop. When the solenoid is powered up the magnetic field changes from zero to final steady value of 0.5 T. How quickly must the magnetic field be switched on so that the induced voltage in the lop does no exceed 12 V.

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Consider an ideal transformer with 100 turns of wire in the primary and 500 turns of wire in the secondary. If the primary coil is fed with 110 V, rms, what is the power consumed by the device connected to the secondary that behaves as a resistor.

Consider an ideal transformer with 100 turns of wire in the primary and 500 turns of wire in the secondary. If the primary coil is fed with 110 V, rms, what is the power consumed by the device connected to the secondary that behaves as a resistor.

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A very long straight wire carries 3.0 A current. A small, 4.0 cm by 5.0 cm square wire loop carrying 2.0 A current is placed next to a long wire such that the 4.0 cm long side is parallel to it and one side is 2.0 cm away. What is the magnitude of the force experienced by the square loop?

A very long straight wire carries 3.0 A current. A small, 4.0 cm by 5.0 cm square wire loop carrying 2.0 A current is placed next to a long wire such that the 4.0 cm long side is parallel to it and one side is 2.0 cm away. What is the magnitude of the force experienced by the square loop?

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Two 115 V power lines, each carrying 100 A to the east, are 40 cm apart. What is the strength of the magnetic field midway between the lines?

Two 115 V power lines, each carrying 100 A to the east, are 40 cm apart. What is the strength of the magnetic field midway between the lines?

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A 15 cm long solenoid has 2000 turns of wire and is designed to cancel the earth’s magnetic field of near its center. How large must be the current through the wire? A. 0.01 mA B. 7.0 mA C. 14 mA + D. 21 mA E. 28 mA

A 15 cm long solenoid has 2000 turns of wire and is designed to cancel the earth’s magnetic field of near its center. How large must be the current through the wire? A. 0.01 mA B. 7.0 mA C. 14 mA + D. 21 mA E. 28 mA

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Internet search company Google operates a fleet of cars known as “Google Street View car”. Cars are equipped with 3 ft tall metal stand for the camera – see picture. At some point tje car is traveling at 80 km/hr on the road where the earth’s magnetic field is approximately . How large is the voltage induced between the roof of the car and the camera stand? A. 3.1 mV B. 1.5 V C. 2.1 mV 6 QU` Q    +`\$ Þ N   +`/   +`/   +`/   +`/   +`/   +`5 12/13/2015 KOONDIS https://learn.koondis.com/CLS/2036/av/koondisnotes/c6s1p1-26 3/7 D. 0.9 mV + E. 1.1 mV

Internet search company Google operates a fleet of cars known as “Google Street View car”. Cars are equipped with 3 ft tall metal stand for the camera – see picture. At some point tje car is traveling at 80 km/hr on the road where the earth’s magnetic field is approximately . How large is the voltage induced between the roof of the car and the camera stand? A. 3.1 mV B. 1.5 V C. 2.1 mV 6 QU` Q    +`\$ Þ N   +`/   +`/   +`/   +`/   +`/   +`5 12/13/2015 KOONDIS https://learn.koondis.com/CLS/2036/av/koondisnotes/c6s1p1-26 3/7 D. 0.9 mV + E. 1.1 mV

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An electric field of 3140 V/m and a normal magnetic field of 1.25 T act on an electron and produce no deflection. How fast is the electron moving? A. 8.4 km/s B. 13.1 km/s C. 0.75 km/s D. 1.0 km/s E. 2.5 km/s +

An electric field of 3140 V/m and a normal magnetic field of 1.25 T act on an electron and produce no deflection. How fast is the electron moving? A. 8.4 km/s B. 13.1 km/s C. 0.75 km/s D. 1.0 km/s E. 2.5 km/s +

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Question 3 An electric dipole moment, consists of two equal but opposite charges, + q and -q, separated by a distance, d. The magnitude of the dipole moment is p = qd and the electric dipole moment vector points from the negative towards the positive charge of the configuration. Consider a water molecule. The measured value of the electrical dipole moment of the water molecule is about . An ionized hydrogen atom happens to be 3.5 nanometers away from the center of the water molecule on the side away from its two hydrogen atoms and along the line defined by the molecule’s dipole moment. (Take the center of the water molecule to be the center of its oxygen atom. Also consider the water molecule to be essentially a small, nearly a point object). How large is the force on the ionized hydrogen atom and what is its direction? A. , attractive B. , repulsive C. , attractive D. , repulsive + E. , attractive

Question 3 An electric dipole moment, consists of two equal but opposite charges, + q and -q, separated by a distance, d. The magnitude of the dipole moment is p = qd and the electric dipole moment vector points from the negative towards the positive charge of the configuration. Consider a water molecule. The measured value of the electrical dipole moment of the water molecule is about . An ionized hydrogen atom happens to be 3.5 nanometers away from the center of the water molecule on the side away from its two hydrogen atoms and along the line defined by the molecule’s dipole moment. (Take the center of the water molecule to be the center of its oxygen atom. Also consider the water molecule to be essentially a small, nearly a point object). How large is the force on the ionized hydrogen atom and what is its direction? A. , attractive B. , repulsive C. , attractive D. , repulsive + E. , attractive

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Question 2 A 4.0 mm diameter plastic rod, 2.2 m long, has of charge 1.4μC uniformly spread over its surface. The electric field very near the surface at the middle of the rod is: A. 2.3 × 10 N/C B. 8.1 × 10 N/C C. 1.4 × 10 N/C D. 2.9 × 10 V/m +

Question 2 A 4.0 mm diameter plastic rod, 2.2 m long, has of charge 1.4μC uniformly spread over its surface. The electric field very near the surface at the middle of the rod is: A. 2.3 × 10 N/C B. 8.1 × 10 N/C C. 1.4 × 10 N/C D. 2.9 × 10 V/m +

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