WB JEE 2017 | Current Electricity Question 29 | Physics

WB JEE 2017

MCQ (Single Correct Answer)

-0.25

Three capacitors of capacitance 1.0, 2.0 and 5.0 $$\mu$$F are connected in series to a 10 V source. The potential difference across the 2.0$$\mu$$F capacitor is

$${{100} \over {17}}$$V

$${{20} \over {17}}$$V

$${{50} \over {17}}$$V

10V

WB JEE 2017

MCQ (Single Correct Answer)

-0.25

Six wires, each of resistance r, are connected so as to form a tetrahedron. The equivalent resistance of the combination when current enters through one corner and leaves through some other corner is

$${r \over 3}$$

$${r \over 2}$$

WB JEE 2017

MCQ (Single Correct Answer)

-0.25

Consider the circuit shown in the figure.

WB JEE 2017 Physics - Current Electricity Question 24 English

The value of the resistance X for which the thermal power generated in it is practically independent of small variation of its resistance is

X = R

X = $${R \over 3}$$

X = $${R \over 2}$$

X = 2R

WB JEE 2017

MCQ (Single Correct Answer)

-0.25

WB JEE 2017 Physics - Current Electricity Question 23 English

Consider the circuit shown in the figure where all the resistances are of magnitude 1 k$$\Omega$$. If the current in the extreme right resistance X is 1 mA, the potential difference between A and B is

34 V

21 V

68 V

55 V

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