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Electricity

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Q 1. Three resistances of {tex}2, 3{/tex} and {tex}5{/tex} {tex} \Omega {/tex} are connected in parallel to a {tex}10{/tex} {tex}\mathrm{V}{/tex} battery of negligible internal resistance. The potential difference across the 3 {tex} \Omega {/tex} resistance will be :

2 V

3 V

5 V

10 V

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Q 2. Charge on an electron is {tex}1.6 \times 10^{-19}{/tex} coulomb. Number of electrons passing through the wire per second on flowing of {tex}1{/tex} ampere current through the wire will be :

{tex}0.625 \times 10^{-19}{/tex}

{tex}1.3 \times 10^{-19}{/tex}

{tex}1.6 \times 10^{-19}{/tex}

{tex}0.625 \times 10^{19}{/tex}

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Q 3. Three resistors are connected to form the sides of a triangle ABC as shown below.

The resistance of side AB is 40 ohms, of side BC 60 ohms and of side CA 100 ohms. The effective resistance between A and B will be :

50{tex} \Omega {/tex}

64{tex} \Omega {/tex}

32{tex} \Omega {/tex}

100{tex} \Omega {/tex}

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Q 4. In the circuit shown in the figure, the current through

The 3 {tex} \Omega {/tex} resistor is 0.50A

The 3 {tex} \Omega {/tex} resistor is 0.25A

The 4 {tex} \Omega {/tex} resistor is 0.50A

The 4 {tex} \Omega {/tex} resistor is 0.25A

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Q 5. Which of the circuit components in the following circuit diagram and connected in parallel?

R{tex}_1{/tex} and R{tex}_2{/tex} only

R{tex}_1{/tex} , R{tex}_2{/tex} and V

R{tex}_2{/tex} and V only

R{tex}_1{/tex} and V only

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