Question

The glucometer applies a potential difference of 0.90 volts across a blood sample. The glucose concentration of the blood sample is 0.98 grams/litre. Determine the current in the blood sample. ​

Answer 1

The amount of current in the blood sample is determined as 0.12 A.

Current in the blood

The current in the blood is calculated by applying Ohm's law as shown below;

V = IR

where;

• V is voltage
• I is current
• R is resistance

From resistivity chart corresponding to 0.98 g/L, resistance, R = 7.4

I = V/R

I = 0.9 /7.4

I = 0.12 A

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