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NUST Entrance Test
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Physics
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Current Electricity

Set 7

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MM

Mashaal Masha

Oct 15, 2022

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$The power dissipated in a resistor is 12.8 watts when 4 A current is passed. How much power will be dissipated if 6 A current is passed through the same resistor?$
$Three resistors connected in series have individual voltages labeled $\rm{V_{1}}$, $\rm{V_{2}}$ and \rm{V_{3}} respectively. Which of the following expresses the value of the total voltage $\rm{V_{T}}$ taken over the three resistors together?$

Choose the correct options for the following questions.

The power dissipated in a resistor is 12.8 watts when 4 A current is passed. How much power will be dissipated if 6 A current is passed through the same resistor?

Difficulty: Easy

A:

16 watts

B:

24 watts

C:

28.8 watts

D:

32.6 watts

View Solution Steps

Three resistors connected in series have individual voltages labeled $\rm{V_{1}}$, $\rm{V_{2}}$ and \rm{V_{3}} respectively. Which of the following expresses the value of the total voltage $\rm{V_{T}}$ taken over the three resistors together?

Difficulty: Easy

A:

\rm{V_{T}=V_{1}+V_{2}+V_{3}}

B:

\rm{V_{T}=\frac{1}{V_{1}}+\frac{1}{V_{2}}+\frac{1}{V_{3}}}

C:

\rm{V_{T}= \left( \frac{1}{V_{1}}+\frac{1}{V_{2}}+\frac{1}{V_{3}} \right)^{-1}}

D:

\rm{V_{T}=V_{1}=V_{2}=V_{3}}

View Solution Steps

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Current Electricity - Set 7