Question

The magnetic field perpendicular to a single 15.7-cm-diameter circular loop of copper wire decreases uniformly from 0.530 T to zero. If the wire is 2.25 mm in diameter, how much charge moves past a point in the coil during this operation? The resistivity of copper is 1.68×10−8Ω⋅m.

Answer #1

The magnetic field perpendicular to a single 15.7-cm-diameter
circular loop of copper wire decreases uniformly from 0.550 T to
zero.
If the wire is 2.75 mm in diameter, how much charge moves past a
point in the coil during this operation? The resistivity of copper
is 1.68×10−8Ω⋅m. Express your answer to three significant figures
and include the appropriate units.

The magnetic field perpendicular to a single 14.2-cm-diameter
circular loop of copper wire decreases uniformly from 0.670 T to
zero. If the wire is 2.75 mm in diameter, how much charge moves
past a point in the coil during this operation? The resistivity of
copper is 1.68×10−8Ω⋅m. Express your answer to three significant
figures and include the appropriate units.

A uniform magnetic field is perpendicular to the plane of a
circular loop of diameter 7.6 cm formed from wire of diameter 3.2
mm and resistivity of 1.83 × 10-8Ω·m. At what rate must
the magnitude of the magnetic field change to induce a 8.8 A
current in the loop?

A time-varying magnetic field is perpendicular to the plane of a
circular loop of diameter 10 cm made with wire of diameter 3.4 mm
and resistivity 2.07 × 10-8?·m.
The magnetic field increases as a function of time, with magnitude
B = (0.79 t) T/s
a) What is the magnitude of the emf induced in the loop?
b) What is the value of the current through the loop?
c) At what rate does energy appear as thermal energy in the...

A 19.0 cm -diameter coil consists of 21 turns of circular copper
wire 3.0 mm in diameter. A uniform magnetic field, perpendicular to
the plane of the coil, changes at a rate of 8.38×10−3
T/s .
a) Determine the current in the loop.
b) Determine the rate at which thermal energy is produced.

A 20.8 cm -diameter coil consists of 22 turns of circular copper
wire 2.8 mm in diameter. A uniform magnetic field, perpendicular to
the plane of the coil, changes at a rate of 8.50×10^?3 T/s .
a) Determine the current in the loop
b) Determine the rate at which thermal energy is produced.

A 23.6 cm -diameter coil consists of 21 turns of circular copper
wire 3.0 mm in diameter. A uniform magnetic field, perpendicular to
the plane of the coil, changes at a rate of 8.60×10?3 T/s.
Part A: Determine the current in the loop.
Part B: Determine the rate at which thermal energy is
produced.

A 26.0 cm diameter coil consists of 24 turns of cylindrical
copper wire 2.40 mm in diameter. A uniform magnetic field,
perpendicular to the plane of the coil, changes at a rate of
6.50e-3 T/s. Determine the current in the loop in milli-amps (the
resistivity for copper is 1.72e-8Ω.m).
answer in mA

A 15.4 cm -diameter coil consists of 21 turns of circular copper
wire 2.6 mm in diameter. A uniform magnetic field, perpendicular to
the plane of the coil, changes at a rate of 7.02×10−3
T/s .
Determine the current in the loop.
Express your answer using two significant figures.
I =
A
Determine the rate at which thermal energy is produced.
Express your answer using two significant figures.
P =
W

4. A length of 20-gauge copper wire (of
diameter 0.8118 mm) is formed into a circular loop with a radius of
30.0 cm. A magnetic field perpendicular to the plane of the loop
increases from zero to 13.0 mT in 0.28 s. Find the average
electrical power dissipated in the process.
Answer in W

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