Question

What is the EMF induced between the ends of a 12 cm wire which
is moved at 84 m/s at 90° to a magnetic field of 4.5 x
10^{-3} T caused by a current of 5.2 A in a solenoid?

Answer #1

Here,the length of the wire,

The velocity of the motion of wire,

the magnetic field caused by the solenoid,

Angle between the magnetic field and the velocity of the wire,

Here the magnetic field,length of wire and velocity are mutually perpendicular to each other.

We have the motional induced emf produced in the wire,

ie,induced motional emf,

ie,

**Motional emf induced,**

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b) A 15.5-cm-diameter loop of wire is initially oriented
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1) A circular loop of radius 3.53 cm contains 61 turns of
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2) The clockwise circulating current in a solenoid is increasing
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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
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Assume that the loop...

A 310 turn solenoid with a length of 23.0 cm and a radius of
1.60 cm carries a current of 1.85 A. A second coil of four turns is
wrapped tightly around this solenoid, so it can be considered to
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(a) Use Ampere's law to calculate the initial magnetic field in
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a) If the magnetic field changes linearly from 0.000 T to 0.800
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is changing?
b) What is the magnitude and direction (CW or CCW when looked...

A fixed 11.8-cm
c
m
-diameter wire coil is perpendicular to a magnetic field 0.52
T
T
pointing up. In 0.25 s
s
, the field is changed to 0.24 T
T
pointing down.
What is the average induced emf in the coil?
Express your answer to two significant figures and include the
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loop?

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