MCQ
The unit of power is
- AJoule
- BJoule per second only
- ✓Joule per second and watt both
- DOnly watt
✓
Answer
Correct option: C.
Joule per second and watt both
c
(c) Watt = Joule/sec.
(c) Watt = Joule/sec.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
A ball of mass $0.5 \; kg$ is dropped from the height of $10 \; m$. The height, at which the magnitude of velocity becomes equal to the magnitude of acceleration due to gravity, is $\dots \; m$. (Use $g =10 \; m / s ^{2}$).
→If $L $ is the coherence length and $c$ the velocity of light, the coherent time is
→Consider a $1\, c.c.$ sample of air at absolute temperature ${T_0}$ at sea level and another $1 cc$ sample of air at a height where the pressure is one-third atmosphere. The absolute temperature $T$ of the sample at that height is
→An $LCR$ circuit is equivalent to a damped pendulum. In an $LCR$ circuit the capacitor is charged to $Q_0$ and then connected to the $L$ and $R$ as shown below.
→If a student plots graphs of the square of maximum charge $( Q_{Max} ^2 )$ on the capacitor with time$(t)$ for two different values $L_1$ and $L_2 (L_1 > L_2)$ of $L$ then which of the following represents this graph correctly? (plots are schematic and not drawn to scale)
When two small bubbles join to form a bigger one, energy is
A Carnot engine has efficiency $25\%$ . It operates between reservoirs of constant temperature with temperature difference of $80\,K$ . What is the temperature of low temperature reservoir ...... $^oC$
→Each quarter of a vessel of depth $H$ is filled with liquids of the refractive indices $n_1, n_2, n_3$ and $n_4$ from the bottom respectively. The apparent depth of the vessel when looked normally is
→A wire can be broken by applying a load of $20\, kg$ weight. The force required to break the wire of twice the diameter is .......... $kg\, wt$
→As the $n$ (number of orbit) increases, the difference of energy between the consecutive energy levels
→When the power delivered by a $100\,volt$ battery is $40\,watts$ the equivalent resistance of the circuit is ........... $ohms$
→