BECE Science 2023 Paper

Concept:Ohm's law: the potential difference across a resistor equals the current through it multiplied by its resistance.Formula used:$V = IR$, where $V$ = potential difference (volts), $I$ = current (amperes), $R$ = resistance (ohms)Given:$I = 3 \text{ A}$$R = 4\ \Omega$Solution:Substitute into $V = IR$:$V = 3 \times 4 = 12 \text{ V}$Options A ($3 \div 4 = 0.75$) and B ($4 \div 3 = 1.33$) come from dividing instead of multiplying, and C ($3 + 4 = 7$) from adding.Answer:Option D ($12.00 \text{ V}$)