41. A field of force can exist only between

Two molecules
Two ions
Two atoms
Two metal particles

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

Resistance
Reluctance
Conductance
Inductance

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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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
doubled 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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45. A thermistor has

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

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46. All of the following are equivalent to watt except

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

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

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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 in series across 230 V (alternating). Which of the following statement is correct?" class="read-more button" href="https://exam.pscnotes.com/mcq/two-lamps-100-w-and-40-w-are-connected-in-series-across-230-v-alternating-which-of-the-following-statement-is-correct/#more-51242">Detailed SolutionTwo lamps 100 W and 40 W are 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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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 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

Detailed SolutionWhat is the answer to this question?

81.2-142.7 81.2z"/> Subscribe on YouTube
The resistance of a few meters of wire conductor in closed electrical circuit is


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