This question can be solved using Ohm's Law, which states that the voltage (V) across a resistor is directly proportional to the current (I) flowing through it, provided the temperature and other physical conditions remain unchanged. The relationship is given by V = I × R, where R is the resistance. Given: Voltage, V = 12 V Resistance, R = 24 ohm We need to find the current, I. Rearranging Ohm's Law: I = V / R Substituting the given values: I = 12 V / 24 ohm = 0.5 A. The ammeter connected in the circuit measures the current, so it would read 0.5 A.
A simple circuit contains a 12 V battery and a bulb having 24 ohm resistance. When you turn on the switch, the ammeter connected in the circuit would read
Asked in UPSC NDA 1 2016 · Topic: Electric Current (Ohm's Law, resistance, resistivity, and conductivity)
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