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Physics Questions

Question 3746:

Which of the following statements about waves in pipes is correct?

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A For open pipes, there is only one end correction to be accounted for
B For closed pipes, there are two end corrections to be accounted for
C Only odd harmonics are possible in closed pipes
D All harmonics are possible in closed pipes

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Question 3747:

When a person holds a negatively charges metal rod and stands bare-footed on the ground, how will the charges leak?

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A Negative charges flows to the ground through the person's body
B Positive charges flow from the ground through his body to neutralize the negative charges
C Positive charges in the air neutralizes the negative charges the person is holding
D Negative charges will leak through the air

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Question 3748:

A charge of 2.0 x 10\(^{-5}\) C experiences a force of 80N in a uniform electric field. Calculate the magnitude of the electric field intensity

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A 8.0 x 10<sup style='font-size: smaller;'>6</sup> NC<sup style='font-size: smaller;'>-1</sup>
B 4.0 x 10<sup style='font-size: smaller;'>6</sup> NC<sup style='font-size: smaller;'>-1</sup>
C 4.0 x 10<sup style='font-size: smaller;'>4</sup> NC<sup style='font-size: smaller;'>-1</sup>
D 2.0 x 10<sup style='font-size: smaller;'>4</sup> NC<sup style='font-size: smaller;'>-1</sup>

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Question 3749:

A potential difference of 12V is applied across the ends of a 6\(\Omega\) resistor for 10 minutes. Determine the quantity of heat generated

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A 720J
B 1200J
C 14400J
D 43200J

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Question 3750:

Which of the following instruments is used to determine the accurate value of the electromotive force of a cell?

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A Voltmeter
B Meterbridge
C Voltameter
D Potentiometer

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