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Question
A simple electric circuit has a 30 V battery and a resistor of 60 Ω. What will be the current in the circuit? The resistance of the connecting wires is negligible.
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Solution
Given: Potential difference (V) = 30 V
Resistance (R) = 60 Ω
Find: Current (I) = ?
Formula: By Ohm’s law,
\[ I=\frac{V}{R} \]
\[ I=\frac{30}{60}=0.5\text{ A} \]
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