All MCQs for Competitive Exams
MCQSAll MCQs for Competitive Exams
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1652 MCQs
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Topic Notes: Competitive Exams
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Practice MCQs for CSS, PMS, FPSC, PPSC, NTS and Pakistan competitive exam preparation. Use topic-wise questions, answers, and explanations to revise quickly and improve exam accuracy.
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41
According to Ohm's Law, the current flowing through a resistor is inversely proportional to which factor?
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42
Which of the following metals exhibits the highest electrical conductivity?
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43
When multiple resistors are connected in a series circuit, how does the current behave across each individual resistor?
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44
Which of the following parameters significantly influence the electrical resistance of a conductor?
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45
Identify the SI unit for electrical resistance.
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46
According to Ohm's Law, how is resistance (R) defined in terms of voltage (V)?
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47
How does the electrical resistance of a typical metallic conductor change in response to temperature variations?
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48
An electric heater operates at 60 V with a current of 4 A. If the voltage is increased to 127.5 V, what will be the new current drawn by the heater, assuming constant resistance?
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49
How do the electrical resistances of copper and germanium change when cooled from room temperature to 77 K?
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50
In a closed electric circuit obeying Ohm's Law, what is the nature of the ratio between voltage and direct current?
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