alleryStart learning →A potential difference of 12 V is applied across a $4\ \Omega$ resistor. The current through it is
A3 A
B48 A
C8 A
D0.33 A
Answer & Solution
Correct answer: A. 3 A
1. Ohm's law: $I = V/R$.
2. $I = 12/4 = 3$ A.
3. So a current of 3 A flows.
_Source: Karnataka SSLC (KSEEB) Class 10 Science, Ch12 'Electricity', §12.3_
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