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20. Current Electricity question bank (Physics)

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Q1.

Three resistors \( 2 \Omega, 4 \Omega \) and \( 5 \Omega \) are combined in parallel. This combination is connected to battery of emf \( 20\ V \) and negligible internal resistance. The total current drawn from the battery is  

(A)
\( 10\ A \)
(B)
\( 15\ A \)
(C)
\( 19\ A \)
(D)
\( 23\ A \)
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Q2.

For which of the following dependences of drift velocity on electric field \( E \), is Ohm’s law obeyed?  

(A)
\( v_d \propto E \)
(B)
\( v_d \propto E^2 \)
(C)
\( v_d \propto \sqrt{E} \)
(D)
\( v_d \propto \frac{1}{E} \)
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