JEE Main 2021 (Online) 26th August Morning Shift | Current Electricity Question 95 | Physics

JEE Main 2021 (Online) 26th August Morning Shift

MCQ (Single Correct Answer)

-1

In the given figure, the emf of the cell is 2.2 V and if internal resistance is 0.6$$\Omega$$. Calculate the power dissipated in the whole circuit :
JEE Main 2021 (Online) 26th August Morning Shift Physics - Current Electricity Question 95 English

JEE Main 2021 (Online) 26th August Morning Shift Physics - Current Electricity Question 95 English

1.32 W

0.65 W

2.2 W

4.4 W

JEE Main 2021 (Online) 26th August Morning Shift

MCQ (Single Correct Answer)

-1

What equal length of an iron wire and a copper-nickel alloy wire, each of 2 mm diameter connected parallel to give an equivalent resistance of 3$$\Omega$$ ?

(Given resistivities of iron and copper-nickel alloy wire are 12 $$\mu$$$$\Omega$$ and 51 $$\mu$$$$\Omega$$ cm respectively)

82 m

97 m

110 m

90 m

JEE Main 2021 (Online) 27th July Evening Shift

MCQ (Single Correct Answer)

-1

A simple pendulum of mass 'm', length 'l' and charge '+ q' suspended in the electric field produced by two conducting parallel plates as shown. The value of deflection of pendulum in equilibrium position will be

JEE Main 2021 (Online) 27th July Evening Shift Physics - Current Electricity Question 97 English

JEE Main 2021 (Online) 27th July Evening Shift Physics - Current Electricity Question 97 English

$${\tan ^{ - 1}}\left[ {{q \over {mg}} \times {{{C_1}({V_2} - {V_1})} \over {({C_1} + {C_2})(d - t)}}} \right]$$

$${\tan ^{ - 1}}\left[ {{q \over {mg}} \times {{{C_2}({V_2} - {V_1})} \over {({C_1} + {C_2})(d - t)}}} \right]$$

$${\tan ^{ - 1}}\left[ {{q \over {mg}} \times {{{C_2}({V_1} + {V_2})} \over {({C_1} + {C_2})(d - t)}}} \right]$$

$${\tan ^{ - 1}}\left[ {{q \over {mg}} \times {{{C_1}({V_1} + {V_2})} \over {({C_1} + {C_2})(d - t)}}} \right]$$

JEE Main 2021 (Online) 27th July Evening Shift

MCQ (Single Correct Answer)

-1

The resistance of a conductor at 15$$^\circ$$C is 16$$\Omega$$ and at 100$$^\circ$$C is 20$$\Omega$$. What will be the temperature coefficient of resistance of the conductor?

0.010$$^\circ$$C^$$-$$1

0.033$$^\circ$$C^$$-$$1

0.003$$^\circ$$C^$$-$$1

0.042$$^\circ$$C^$$-$$1

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