HP 48GII User Manual

Equation Reference 5-33
Magnetic (B) Field in Solenoid (7, 3)
Equation:
Example:
Given:
µ r=10, n=50, I=1.25_A.
Solution: B=0.0785_T.
Magnetic (B) Field in Toroid (7, 4)
Equation:
Example:
Given:
µ r=10, N=50, ri=5_cm, ro=7_cm, I=10_A.
Solution: B=1.6667E–2_T.
B
µ
0
µ
r I n
⋅
⋅ ⋅
=
B
µ
0
µ
r I
N
⋅ ⋅ ⋅
2
π ⋅
- -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
2
r
o ri+
-
--------------
⎝
⎠
⎛
⎞
⋅
=

HP 48GII Specifications

General

Battery type	CR2032
Type	Scientific
Form factor	Pocket

Weight and Dimensions

Weight	220 g
Dimensions (WxDxH)	184 x 87 x 23.5 mm