A ring with an internal area of 25 cm2 has a current of 250 mA. If...
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ring with an internal area of 25 cm2 has a current of 250 mA. If...
A current loop in a motor has an area of 1.95 cm2 . It carries a...
A current loop in a motor has an area of 1.95 cm2 . It carries a 240 mA current in a uniform field of 0.62 T . Part A What is the magnitude of the maximum torque on the current loop? Express your answer with the appropriate units.
A current loop in a motor has an area of 0.85 cm2. It carries a 240...
A current loop in a motor has an area of 0.85 cm2. It carries a 240 mA current in a uniform field of 0.62 T . What is the magnitude of the maximum torque on the current loop? Express your answer using two significant figures. τ = __________N*m
5. An iron ring with a cross-sectional area of 3 cm2 and a mean circumference of...
5. An iron ring with a cross-sectional area of 3 cm2 and a mean circumference of 75 cm is wound with 250 turns wire carrying a current of 0.3 A. The relative permeability of the ring is 7500. Calculate the flux established in the ring.
A flat, 172-turn, current‑carrying loop is immersed in a uniform magnetic field. The area of the...
A flat, 172-turn, current‑carrying loop is immersed in a uniform magnetic field. The area of the loop is 6.55 cm2 and the angle between its magnetic dipole moment and the field is 30.5∘. Find the strength B of the magnetic field that causes a torque of 1.23×10−5 N⋅m to act on the loop when a current of 2.73 mA flows in it.
A parallel-plate capacitor has a plate area of A = 250 cm2 and a separation of...
A parallel-plate capacitor has a plate area of A = 250 cm2 and a separation of d = 2.00 mm. The capacitor is charged to a potential difference of V0 = 150 V by a battery. A dielectric sheet (κ = 3.50) of the same area but thickness ℓ = 1.00 mm is placed between the plates without disconnecting the battery. (See figure 24-18 on page 642). Determine the electric field in the dielectric. Determine the free charge on the...
A coil is free to rotate in a magnetic field with a flux density of 33...
A coil is free to rotate in a magnetic field with a flux density of 33 mT. The coil has 50 loops and an area of 25 cm2. A current of 0.75 amps flows through the coil. When the plane of the coil makes a certain angle with the magnetic field, the torque on the coil is 2.8 × 10–3 N m. If the coil rotates until this angle is doubled, what is the percentage change in torque?
A 195 turn coil has an area of 5 cm2 and rotates in a magnetic field...
A 195 turn coil has an area of 5 cm2 and rotates in a magnetic field of 0.5 T. (a) What frequency will generate a maximum EMF of 10 V?
A parallel-plate capacitor has a plate area of A = 250 cm2 and a separation of...
A parallel-plate capacitor has a plate area of A = 250 cm2 and a separation of d = 2.00 mm. The capacitor is charged to a potential difference of V0 = 150 V by a battery. A dielectric sheet (κ = 3.50) of the same area but thickness ℓ = 1.00 mm is placed between the plates without disconnecting the battery. (See figure 24-18 on page 642). Determine the initial capacitance of the air-filled capacitor. Determine the charge on the...
A current loop in a motor has an area of 1.75 cm^3. It carries a 240...
A current loop in a motor has an area of 1.75 cm^3. It carries a 240 mA current in a uniform field of 0.62 T. What is the magnitude of the maximum torque on the current loop?
In a physics laboratory experiment, a coil with 250 turns enclosing an area of 14.0 cm2...
In a physics laboratory experiment, a coil with 250 turns enclosing an area of 14.0 cm2 is rotated during the time interval 4.50×10−2 s from a position in which its plane is perpendicular to Earth's magnetic field to one in which its plane is parallel to the field. The magnitude of Earth's magnetic field at the lab location is 5.90×10−5 T . What is the magnitude of the magnetic flux (Φinitial) through the coil before it is rotated? What is...
5. An iron ring with a cross-sectional area of 3 cm2 and a mean circumference of 75 cm is wound with 250 turns wire carrying a current of 0.3 A. The relative permeability of the ring is 7500. Calculate the flux established in the ring.
A current loop in a motor has an area of 1.75 cm^3. It carries a 240 mA current in a uniform field of 0.62 T. What is the magnitude of the maximum torque on the current loop?
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