Question

A time-varying magnetic field is perpendicular to the plane of a circular loop of diameter 10...

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 loop?

d) If the magnetic field is constant in time, with magnitude B = 0.79 T, and the radius of the loop of the wire decreases at a rate of 0.2 cm / s, what is the magnitude of the induced emf?

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A 26.8 cm-diameter loop of wire is initially oriented perpendicular to a 1.6 T magnetic field....
A 26.8 cm-diameter loop of wire is initially oriented perpendicular to a 1.6 T magnetic field. The loop is rotated so that its plane is parallel to the field direction in 0.22 s . What is the magnitude of the average induced emf in the loop? Express your answer using two significant figures. Eavg=    V
Question 1: A 13.7 cm diameter loop of wire is initially oriented perpendicular to a 1.9...
Question 1: A 13.7 cm diameter loop of wire is initially oriented perpendicular to a 1.9 T magnetic field. The loop is rotated so that its plane is parallel to the field direction in 0.33 s . Part A: What is the average induced emf in the loop? Question 2: A 7.4 cm diameter circular loop of wire is in a 0.71 T magnetic field. The loop is removed from the field in 0.28 s . Assume that the loop...
A circular loop in the plane of the paper lies in a 0.76 T magnetic field...
A circular loop in the plane of the paper lies in a 0.76 T magnetic field pointing into the paper. If the loop's diameter changes from 20.2 cm to 9.6 cm in 0.56 s. What is the direction of the induced current? What is the magnitude of the average induced emf?
A circular loop in the plane of the paper lies in a 0.38 T magnetic field...
A circular loop in the plane of the paper lies in a 0.38 T magnetic field pointing into the paper. Part A: If the loop's diameter changes from 19.4 cm to 5.8 cm in 0.49 s , what is the direction of the induced current? Part B: What is the magnitude of the average induced emf?
A circular loop in the plane of the paper lies in a 0.75 T magnetic field...
A circular loop in the plane of the paper lies in a 0.75 T magnetic field pointing into the paper. The loop’s diameter is changed from 20.0 cm to 6.0 cm in 0.50 s. Determine the direction of the induced current and justify your answer. Determine the magnitude of the average induced emf. If the coil resistance is 2.5 Ω, what is the average induced current?
A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of...
A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of the field is changing, so that an emf of 0.23 V and a current of 2.4 A are induced in the coil. The wire is then re-formed into a single-turn square coil, which is used in the same magnetic field (again perpendicular to the plane of the coil and with a magnitude changing at the same rate). What (a) emf and (b) current are...
A two-turn circular wire loop of radius 0.737 m lies in a plane perpendicular to a...
A two-turn circular wire loop of radius 0.737 m lies in a plane perpendicular to a uniform magnetic field of magnitude 0.591 T. If the entire wire is reshaped from a twoturn circle to a one-turn circle in 0.116 s (while remaining in the same plane), what is the magnitude of the average induced emf E in the wire during this time? Use Faraday’s law in the form E = − ∆(N Φ) ∆t . Answer in units of V.
9. A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude...
9. A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of the field is changing, so that an emf of 0.77 V and a current of 2.7 A are induced in the coil. The wire is then re-formed into a single-turn square coil, which is used in the same magnetic field (again perpendicular to the plane of the coil and with a magnitude changing at the same rate). What emf is induced in the...
A circular loop of wire of radius R lies in the xy-plane, where a time-varying, radially...
A circular loop of wire of radius R lies in the xy-plane, where a time-varying, radially symmetric magnetic field of magnitude B = k r t3  (in SI units) points in the positive z-direction. Here, t is time, r is the distance from the centre of the loop, and k is a positive constant. (i)   What must be the SI units of k ?    (ii) Calculate the magnetic flux Φm through the loop as a function of time t.   ...
A square loop of wire is held in a uniform 0.35 T magnetic field directed perpendicular...
A square loop of wire is held in a uniform 0.35 T magnetic field directed perpendicular to the plane of the loop. The length of each side of the square is decreasing at a constant rate of 4.0 cm/s. What emf is induced in the loop when the length is 9.2 cm?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT