WorksheetsMagnetic field due to current distribution.
Total questions: 9
Worksheet time: 9mins
Name
Class
Date
1.
A straight wire carrying a 9.0 A current is in a uniform magnetic field oriented at right angles to the wire. When 75 cm of wire is in the field, the force on the wire is 1.2 N. What is the strength of the magnetic field (B)? HINT: F=I.L.B
a)
= 0.18 N
b)
= 0.18 T
c)
= 0.18 Cm
d)
= 0.18
2.
A compass behaves as it does because each needle acts as a(n) ___________.
a)
Magnet
b)
Guide
3.
Magnetic poles that are unlike ________and magnetic poles that are alike ___________.
a)
run; stay
b)
attract; repel
c)
stay; repel
d)
repel; attract
4.
What is a magnetic field?
a)
purple lines with arrows
b)
area of magnetic force around a magnet
c)
it's like a really big football field
d)
area of a magnet around a magnetic force
5.
The SI unit of magnetic field is
a)
weber
b)
guass
c)
tesla
d)
farad
6.
The strongest part of a magnet is...
a)
the bars.
b)
the force field.
c)
the poles.
d)
the middle.
7.
The area of magnetic force around a magnet is known as its _____________.
a)
magnetic field
b)
magnetic declination
c)
magnetic fan lines
d)
magnetic tan lines
8.
A ________ is a device that has a magnet on a needle that spins freely. It is used for navigation because its needle usually points north.
a)
calculator
b)
ruler
c)
compass
d)
map
9.
The area of magnetic force around a magnet is known as its _____________.
a)
magnetic field
b)
magnetic declination
c)
magnetic fan lines
d)
magnetic tan lines
100 %
