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WAEC Physics 2011 Paper
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© africaexams.com
Question : 39
Total: 49
An ammeter with a full scale deflection of 10mA has an internal resistance 0.5
Ω
. calculate the resistance of the shunt required to adapt it to read up to 3A
0.0167
Ω
0.0130
Ω
0.0250
Ω
0.1000
Ω
Validate
Solution:
R
2
=
I
1
R
1
I
2
=
0.01
×
5
2.99
= 0.0167
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