AP EAPCET 2024 - 21th May Evening Shift | Current Electricity Question 1 | Physics

The charge $q$ (in coulomb) passing through a $10 \Omega$ resistor as a function of time $t$ (in second) is given by $q=3 t^2-2 t+6$. The potential difference across the ends of the resistor at time $t=5 \mathrm{~s}$ is

120 V

240 V

140 V

280 V

AP EAPCET 2024 - 21th May Evening Shift

MCQ (Single Correct Answer)

-0

A cell of emf 1.2 V and internal resistance $2 \Omega$ is connected in parallel to another cell of emf 1.5 V and internal resistance $1 \Omega$. If the like poles of the cells are connected together, the emf of the combination of the two cells is

0.8 V

3.9 V

2.7 V

1.4 V

AP EAPCET 2024 - 21th May Morning Shift

MCQ (Single Correct Answer)

-0

Five equal resistances each $2 R$ connected as shown in figure. A battery of $V$ volts connected between $A$ and $B$. Then, current through $F C$ is AP EAPCET 2024 - 21th May Morning Shift Physics - Current Electricity Question 3 English

AP EAPCET 2024 - 21th May Morning Shift Physics - Current Electricity Question 3 English

$\frac{V}{4 R}$

$\frac{V}{8 R}$

$\frac{V}{R}$

$\frac{V}{2 R}$

AP EAPCET 2024 - 21th May Morning Shift

MCQ (Single Correct Answer)

-0

A lamp is rated at $240 \mathrm{~V}, 60 \mathrm{~W}$. When in use the resistance of the filament of the lamp is 20 times that of cold filament. The resistance of the lamp when not in use is

$54 \Omega$

$60 \Omega$

$50 \Omega$

$48 \Omega$

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