WB JEE 2018 | Current Electricity Question 20 | Physics

WB JEE 2018

MCQ (Single Correct Answer)

-0.25

What will be current through the 200$$\Omega $$ resistor in the given circuit, a long time after the switch K is made on?

WB JEE 2018 Physics - Current Electricity Question 16 English

WB JEE 2018 Physics - Current Electricity Question 16 English

Zero

100 mA

10 mA

1 mA

WB JEE 2018

MCQ (Single Correct Answer)

-0.25

An electric bulb, a capacitor, a battery and a switch are all in series in a circuit. How does the intensity of light vary when the switch is turn on?

continues to increase gradually

gradually increases for sometime and then becomes steady

sharply rises initially and then gradually decreases

gradually increases for sometime and then gradually decreaes.

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 18 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

PREVIOUS NEXT

WB JEE Subjects