In a circuit with a constant supply voltage

PHYSICS · Single correct · CBSE · Physics · Electricity · Electricity

Problem

In a circuit with a constant supply voltage, an adjustable resistor is first set to

150\,\Omega

, and the ammeter reads

80\,\text{mA}

. Keeping the supply voltage unchanged, the resistor is reset to

60\,\Omega

. Determine the new current reading. (a)

0.032\ \text{A}

(b)

0.08\ \text{A}

(c)

0.20\ \text{A}

(d)

0.12\ \text{A}