A 0.5Ω shunt resistor is used to measure current with a CRO. If the measured voltage drop is 5V, what is the current?

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RRB JE EE 22 Apr 2025 Shift 1 CBT 2 Official Paper
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  1. 2.5 A
  2. 10 A
  3. 5 A
  4. 20 A

Answer (Detailed Solution Below)

Option 2 : 10 A
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Detailed Solution

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Concept

The current across a resistor is given by:

\(I = {V\over R}\)

where, I = Current

V = Voltage

R = Resistor

Calculation

Given, R = 0.5 Ω 

V = 5 volts

\(I = {5\over 0.5}\)

I = 10 A

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