A 500-turn circular loop 15.0 cm in diameter is initially aligned so that its axis is parallel to the Earth's magnetic field. In 2.77 ms the coil is flipped so that its axis is perpendicular to the Earth's field. If a voltage of 0.166 V is induced in the coil, what is the value of the Earth's magnetic field?

The figure below shows a 117-turn square coil rotating about a vertical axis at at w = 1,510 rev/min. The length of a side of the coil is 20.0 cm. The horizontal component of the Earth's magnetic field at the coil's location is equal to 2.00 x 10-5 T. 20.0 cm 120.0 cm (a) What is the magnitude of the maximum emf (in mV) induced in the coil by the Earth's magnetic field? mv (b) What is the orientation of the coil with respect to the magnetic field when the maximum emf occurs? The plane of the coil is oriented 45° with respect to the magnetic field. The plane of the coil is perpendicular to the magnetic field. The plane of the coil is parallel to the magnetic field.

An emf is induced by rotating a 1060 turn, 20.0 cm diameter coil in the Earth's 4.85 x 10-5 T magnetic field. What average emf (in V) is induced, given the plane of the coil is originally perpendicular to the Earth's field and is rotated to be parallel to the field in 10.0 ms?

A 280-turn rectangular coil with area, A = 0.22 m², and resistance, R = 772, is rotating at a constant rate of 66 rpm in a uniform magnetic field, B = 0.473 T. (a) What is the angular speed of the rotating coil? rads/s W = (b) Calculate the frequency, f, and period, T, of the coil's rotation. Hz and T = f = sec

A 90-turn square coil of side 20.0 cm rotates about a vertical axis at o = 1.74 x 10° rev/min as indicated in the figure below. The horizontal component of Earth's magnetic field at the coil's location is equal to 2.00 x 10 T. 20.0 cm 20.0 cm (a) Calculate the maximum emf induced in the coil by this field. mv (b) What is the orientation of the coil with respect to the magnetic field when the maximum emf occurs? O The plane of the coil is oriented 45° with respect to the magnetic field. O The plane of the coil is perpendicular to the magnetic field. O The plane of the coil is parallel to the magnetic field.

An emf is induced by rotating a 1000-turn, 20.0 cm diameter coil in the Earth’s 5.00 x 10-5 T magnetic field. What average emf is induced, given the plane of the coil is originally perpendicular to the Earth’s field and is rotated to be parallel to the field in 10.0 ms?

A square, single turn coil of length 0.02m is placed with its plane perpendicular to a constant magnetic field. An emf of 18mV is induced in the windings of the coil when the area of the coil decreases at a rate of 0.10m^2/s. What's the magnitude of the magnetic field?

A conducting coil of 2100 turns is connected to a galvanometer, and the total resistance of the circuit is 30 2. The area of each turn is 5.25 x 10-4 m2. This coil is moved from a region where the magnetic field is zero into a region where it is nonzero, the normal to the coil being kept parallel to the magnetic field. The amount of charge that is induced to flow around the circuit is measured to be 8.5 × 10´³C. Find the magnitude of the magnetic field. Number i Units

Question 4: A 1000-turn coil of wire 1.0 cm in diameter is in a magnetic field that increases from 0.10 T to 0. 30 T in 10 ms. The axis of the coil is parallel to the field. What is the voltage induced in the coil?

A strong electromagnet produces a uniform magnetic field of 1.60 T over a cross-sectional area of 0.270 m2. A coil having 190 turns and a total resistance of 21.0 0 is placed around the electromagnet. The current in the electromagnet is then smoothly reduced until it reaches zero in 20.0 ms. What is the current induced in the coil?