A rectangular coil of wire, 22.0 cm by 35.0 cm and carrying a current of 1.95 A, is oriented with the plane of its loop perpendicular to a uniform 1.50-T magnetic field ( Fig. E27.42 ). (a) Calculate the net force and torque that the magnetic field exerts on the coil, (b) The coil is rotated through a 30.0° angle about the axis shown, with the left side coming out of the plane of the figure and the right side going into the plane. Calculate the net force and torque that the magnetic field now exerts on the coil. ( Hint: To visualize this three-dimensional problem, make a careful drawing of the coil as viewed along the rotation axis.) Figure E27.42
A rectangular coil of wire, 22.0 cm by 35.0 cm and carrying a current of 1.95 A, is oriented with the plane of its loop perpendicular to a uniform 1.50-T magnetic field ( Fig. E27.42 ). (a) Calculate the net force and torque that the magnetic field exerts on the coil, (b) The coil is rotated through a 30.0° angle about the axis shown, with the left side coming out of the plane of the figure and the right side going into the plane. Calculate the net force and torque that the magnetic field now exerts on the coil. ( Hint: To visualize this three-dimensional problem, make a careful drawing of the coil as viewed along the rotation axis.) Figure E27.42
A rectangular coil of wire, 22.0 cm by 35.0 cm and carrying a current of 1.95 A, is oriented with the plane of its loop perpendicular to a uniform 1.50-T magnetic field (Fig. E27.42). (a) Calculate the net force and torque that the magnetic field exerts on the coil, (b) The coil is rotated through a 30.0° angle about the axis shown, with the left side coming out of the plane of the figure and the right side going into the plane. Calculate the net force and torque that the magnetic field now exerts on the coil. (Hint: To visualize this three-dimensional problem, make a careful drawing of the coil as viewed along the rotation axis.)
In the figure below, what is the net resistance of the circuit connected to the battery? Assume that all resistances in the circuit is equal to 14.00 kΩ. Thank you.
Due to the nature of this problem, do not use rounded intermediate values-including answers submitted in WebAssign-in your calculations.
3
4
Find the currents flowing in the circuit in the figure below. (Assume the resistances are R₁ =6, R₂ = 20, R₂ = 10 N, R₁ = 8, r₁ = 0.75 0, r2=0.50, 3
× A
× A
I,
= 3.78
12
13
= 2.28
=
1.5
× A
R₁
b
a
R₁₂
w
C
1,
12
13
R₂
E3
12 V
E₁
18 V
g
Ez
3.0 V
12
Ea
شرة
R₁
e
24 V
d
= 0.25 0, and 4
=
0.5 0.)
In the circuit shown below Ɛ = 66.0 V, R5 = 4.00 £2, R3 = 2.00 N, R₂ = 2.20 N, I5 = 11.41 A, I = 10.17 A, and d I₁ = 6.88 A. Find the current through R2 and R3, and the values of the resistors R₁ and R. (Due to the nature of this
problem, do not use rounded intermediate values—including answers submitted in WebAssign-in your calculations.)
12
= 8.12
A
RA
=
-1.24
Based on the known variables, which two junctions should you consider to find the current I3? A
9.59
Which loop will give you an equation with just R₁ as the unknown? Did you follow the sign convention for the potential difference across each element in the loop?
6.49
Which loop will give you an equation with just R as the unknown? Did you follow the sign convention for the potential difference across each element in the loop? N
R₁
ww
R₂
www
R4
ww
14
15
www
R5
www
R3
Chapter 27 Solutions
University Physics with Modern Physics, Books a la Carte Edition; Modified MasteringPhysics with Pearson eText -- ValuePack Access Card -- for ... eText -- Valuepack Access Card (14th Edition)
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