When connected across the terminals of a cell, a voltmeter measures 5 V and a connected ammeter measures 10 A of current. A resistance of 2 ohm s is connected across the terminals of the cell. The current flowing through this resistance will be

Options

A. 2.5 A
B. 2.0 A
C. 5.0 A
D. 7.5 A

Answer

B

Explanation

Emf E = 5 V, internal resistance
`r=(5)/(10)=0.5 Omega`
Current through the resistance
`i=(5)/((2+0.5))=2A`