Question

If the resistance of ammeter and milli-ammeter are \( x_1 \) and \( x_2 \) respectively, then:

• A. \( x_1 > x_2 \)
• B. \( x_1 = x_2 \)
• C. \( x_1 < x_2 \)
• D. \( x_1 \geq x_2 \)

Hint:

Milli-ammeters have higher resistance than regular ammeters because they are designed for lower current measurements.

Answer 1

The Correct Option is C

Step 1: An ammeter is designed to measure larger currents with lower resistance, whereas a milli-ammeter measures smaller currents and therefore requires higher sensitivity. 

Step 2: Since a milli-ammeter is more sensitive, it has higher internal resistance compared to an ammeter. \[ \therefore x_1<x_2 \] \[ \boxed{x_1<x_2} \]