Current electricity

42. The property of a conductor due to which it passes current is called

Resistance
Reluctance
Conductance
Inductance

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button" href="https://exam.pscnotes.com/mcq/the-property-of-a-conductor-due-to-which-it-passes-current-is-called/#more-52710">Detailed SolutionThe property of a conductor due to which it passes current is called

43. If a wire conductor of 0.2 ohm resistance is doubled in length, its resistance becomes

0.4 ohm
0.6 ohm
0.8 ohm
1.0 ohm

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in length, its resistance becomes" class="read-more button" href="https://exam.pscnotes.com/mcq/if-a-wire-conductor-of-0-2-ohm-resistance-is-doubled-in-length-its-resistance-becomes/#more-52642">Detailed SolutionIf a wire conductor of 0.2 ohm resistance is doubled in length, its resistance becomes

44. Varistors are

Insulators
Nonlinear resistors
Carbon resistors
Resistors with zero temperature coefficients

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23.7 24.8 41.5 48.3 47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z"/> Subscribe on YouTube class="read-more button" href="https://exam.pscnotes.com/mcq/varistors-are/#more-51626">Detailed SolutionVaristors are

45. A thermistor has

Positive temperature coefficient
Negative temperature coefficient
Zero temperature coefficient
Variable temperature coefficient

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has" class="read-more button" href="https://exam.pscnotes.com/mcq/a-thermistor-has/#more-51607">Detailed SolutionA thermistor has

46. All of the following are equivalent to watt except

Joule/second
Ampere × volt
(Ampere)2 × ohm
Ampere/volt

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64S117.2 64 74.6 75.5c-23.5 6.3-42 24.9-48.3 48.6-11.4 42.9-11.4 132.3-11.4 132.3s0 89.4 11.4 132.3c6.3 23.7 24.8 41.5 48.3 47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z"/> Subscribe on YouTube button" href="https://exam.pscnotes.com/mcq/all-of-the-following-are-equivalent-to-watt-except/#more-51431">Detailed SolutionAll of the following are equivalent to watt except

47. Two lamps 100 W and 40 W are connected in series across 230 V (alternating). Which of the following statement is correct?

100 W lamp will glow brighter
40 W lamp will glow brighter
Both lamps will glow equally bright
40 W lamp will fuse

Detailed SolutionTwo lamps 100 W and 40 W are

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connected in series across 230 V (alternating). Which of the following statement is correct?

48. Electric current passing through the circuit produces

Magnetic effect
Luminous effect
Thermal effect
Chemical effect

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button" href="https://exam.pscnotes.com/mcq/electric-current-passing-through-the-circuit-produces/#more-51134">Detailed SolutionElectric current passing through the circuit produces

49. When resistance element of a heater fuses and then we reconnect it after removing a portion of it, the power of the heater will

Decrease
Increase
Remain constant
None of the above

Detailed SolutionWhen resistance element of

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a heater fuses and then we reconnect it after removing a portion of it, the power of the heater will

50. What is the answer to this question? The resistance of a few meters of wire conductor in closed electrical circuit is

Practically zero
Low
High
Very high

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button" href="https://exam.pscnotes.com/mcq/what-is-the-answer-to-this-question-the-resistance-of-a-few-meters-of-wire-conductor-in-closed-electrical-circuit-is/#more-50671">Detailed SolutionWhat is the answer to this question? The resistance of a few meters of wire conductor in closed electrical circuit is
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