(C) The power rating of a bulb is given by $P = \frac{V^2}{R}$,where $V$ is the rated voltage and $R$ is the resistance of the bulb.For the first bulb

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(C) The power rating of a bulb is given by $P = \frac{V^2}{R}$,where $V$ is the rated voltage and $R$ is the resistance of the bulb.For the first bulb,$R_1 = \frac{V^2}{P_1}$.For the second bulb,$R_2 = \frac{V^2}{P_2}$.When connected in parallel,the total power $P_{\text{total}}$ is the sum of the individual powers consumed by each bulb.Since the voltage $V$ applied is the same as the rated voltage,each bulb consumes its rated power.Therefore,$P_{\text{total}} = P_1 + P_2$.

Class 11 Chemistry Data Entry - Chemistry Level 0 of all question bank

Two electric bulbs rated $P_1 \text{ watt}, V \text{ volt}$ and $P_2 \text{ watt}, V \text{ volt}$ are connected in parallel and $V \text{ volt}$ is applied to them. The total power consumed will be

A
$\frac{P_1 P_2}{P_1 + P_2} \text{ watt}$
B
$\sqrt{P_1 P_2} \text{ watt}$
C
$(P_1 + P_2) \text{ watt}$
D
$\frac{P_1 + P_2}{P_1 P_2} \text{ watt}$

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$A$ clock pendulum made of invar has a period of $0.5 \, s$ at $20^{\circ} C$. If the clock is used in a climate where the temperature averages to $30^{\circ} C$, how much time does the clock lose in each oscillation? (For invar, $\alpha = 9 \times 10^{-7} /{ }^{\circ} C$, $g = \text{constant}$)

AP EAMCET 2009

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Two electric bulbs rated $P_1 \text{ watt}, V \text{ volt}$ and $P_2 \text{ watt}, V \text{ volt}$ are connected in parallel and $V \text{ volt}$ is applied to them. The total power consumed will be

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The orange coloured compound formed when $H_2O_2$ is added to $TiO_2$ solution acidified with conc $H_2SO_4$ is

Assertion $A$: Barium is not required in the normal biological processes of the human body.Reason $R$: Barium does not exhibit more than one oxidation state.

If the pair of lines given by $(x^2+y^2) \cos^2 \theta = (x \cos \theta + y \sin \theta)^2$ are perpendicular to each other,then $\theta$ is equal to

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$A$ clock pendulum made of invar has a period of $0.5 \, s$ at $20^{\circ} C$. If the clock is used in a climate where the temperature averages to $30^{\circ} C$, how much time does the clock lose in each oscillation? (For invar, $\alpha = 9 \times 10^{-7} /{ }^{\circ} C$, $g = \text{constant}$)

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Assertion $A$: Barium is not required in the normal biological processes of the human body.
Reason $R$: Barium does not exhibit more than one oxidation state.