# NEET Physics Current Electricity Questions Solved

NEET - 2008

In the circuit shown, the current through the 4 $\Omega$ resistor is 1 A when the points P and M are connected to a DC voltage source. The potential difference  between the points M and N is

(a) 1.5 V

(b) 1.0 V

(c) 0.5 V

(d) 3.2 V

In parallel resistances, potential difference across PM

V=4$×1=4$ volt (i.e, across 4 $\Omega$)

Equivalent resitance of lower side arm,

Now the circuit can be shown as

Let current I flows in lower branch, so 1.25 I = 4 V

or             I=

Therefore, 3.2 A current flows in 1 $\Omega$ resistance, hence potential difference between M and N is

Difficulty Level:

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