An ammeter of resistance 1.0\(\Omega\) has a full-scale deflection of 50mA. Determine the resultant full-scale deflection of the meter when a shunt of 0.0111\(\Omega\) is connected across its terminals.
a
400mA
b
450mA
c
500mA
d
550mA
Explanation
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iLukasso
9 years ago
= 0.1 x 50 x 10-3 = 5 x 10-3volts
RT = 0.1×0.01110.1+0.01110.1×0.01110.1+0.0111
= 9.99 x 10-3ΩΩ
V = IR ⇒⇒ I
= 5×10−39.9×10−35×10−39.9×10−3
= 0.5A ; = 500mA
iLukasso
9 years ago
The selected answer is wrong:
You selected a wrong answer
REF: = 0.1 x 50 x 10-3 = 5 x 10-3volts
RT = 0.1×0.01110.1+0.01110.1×0.01110.1+0.0111
= 9.99 x 10-3ΩΩ
V = IR ⇒⇒ I
= 5×10−39.9×10−35×10−39.9×10−3
= 0.5A ; = 500mA
